feat: mirror /note to the channel and close the shared mid-send TOCTOU

[rnoack1]

Problem / Motivation

POST /api/chat/slots/{slot}/note writes two halves. Only one was surface-aware.

The context half is already surface-agnostic: drain_pending_context runs inside _run_chat, the one runner every inbound surface shares, so a note reaches the model whether the next message is typed in the dashboard, Slack or Telegram.

The visible half was not. slot.append(broadcast=True) fans out over the dashboard's own SSE/WS and nothing else, and every channel egress lives in the turn loop (user echo, tool stream, assistant reply, approval prompt, auth error) as a separate site the note path never reached.

Why it matters

The result is worse-shaped than a missing notification: a session driven from a channel gained an agent that silently knew something its user was never shown. The note had no visible provenance on the surface they were reading, so the next turn referenced something with no record behind it. A missing notice gets noticed; invisible provenance does not.

What changed

Delivery reuses the two existing outbound paths rather than adding a third, matching chat_compaction_notice — the closest existing analogue, a proactive non-turn notice addressed to whatever conversation a session belongs to.

• Slack — slack_client.post_message. Slack is deliberately absent from the channel_transports registry so it cannot ride the ladder, and it is the one channel bindable two ways: a Slack-born session's origin, or a dashboard slot's _slack_linked mirror. Both resolve here.
• Every other channel — the governed cross-surface ladder (_resolve_channel_target), walking origin then mirror. This covers the remaining nine transports with no per-channel code, inheriting governance vetting, recipient re-authorization, supports_proactive_send and chunk_for_transport.

Both legs can fire for one note: a dashboard slot can hold a Slack thread link and a non-Slack mirror at once, and each is a conversation with a user in it.

The mirror is dispatched in the background and the response reports nothing about it. An earlier revision returned a mirroredTo field; First Principles measured zero consumers for it, and I confirmed that at source — the field appeared in 0 files at the base, so it had never shipped and no external caller could depend on it. It was also the only reason the POST waited on a channel at all. Removing it removes the wait, the ceiling that bounded the wait, and both arms that served it. The note's contract stays the transcript line and the context entry. For a note that is NOT held those are committed before the mirror is dispatched. A HELD note is not mirrored at all, which is how that inverse gap is closed. While a turn is running appended is false and neither half is committed, so a foreign binding acquired before flush drops BOTH rather than retargeting them; mirroring at POST would therefore have published a channel note asserting content the session never received. The dispatch is guarded by if not deferred: and deliveryConditional reports the hold, so no caller is told otherwise. Mirroring held notes at FLUSH time, once their halves land, now ships: the held record carries its authored destinations and flush_deferred_notes dispatches them, across its six invocation sites in three modules (chat_orchestrator twice, chat_runner twice, chat_handlers twice, the last two on a slot being torn down) (a different count from the seven resolve-then-send sites inventoried in slack_egress.py) and moving channel egress under it is a behaviour change to a surface this PR does not otherwise touch.

One further change rides along and is declared here rather than left for a reader to find: _source_cap_reached builds its held-context list as [c for c in (n.get("context") for n in slot._deferred_notes) if c is not None], reading each held note's context ONCE through .get() instead of testing it and then subscripting it. Behaviour is unchanged — the previous comprehension evaluated its guard before the subscript, so it could not raise on a context-less entry either — but the durable hold now admits entries this predicate walks, and a single read is the form that stays correct if that ever stops implying the key is present.

Two decisions worth a reviewer's attention

HELD NOTES MIRROR AT FLUSH, not at POST. A note arriving while a turn runs is held, and that is the common case for background senders by the module's own docstring, so it is the case the feature most needs to cover. Mirroring at HOLD time is rejected on orphan-post integrity: neither half is committed while held, so the channel would carry a line the transcript does not yet have, and a foreign rebind before the flush drops both halves and leaves the channel asserting a note that does not exist in the session. An orphan post is a data-integrity defect; a dropped best-effort mirror is not. So the POST dispatch stays guarded by if not deferred:, pinned by test_a_held_note_does_not_reach_the_channel, and the held record instead carries the destinations the note was AUTHORED for plus a bound dispatch. flush_deferred_notes calls it once BOTH halves commit, pinned by TestAHeldNoteMirrorsAtFlush. Snapshotting at authoring rather than at flush is what keeps the authored-link guarantee: a channel rebind during the hold makes the send REFUSE on the comparison instead of retargeting to the replacement. Three cases are pinned separately — the dispatch itself, a raising mirror not un-writing a committed note (the suffix-restore must not fire for a delivery failure), and a note dropped for a foreign rebind never dispatching at all. The mirror is carried on the record rather than threaded through a new parameter because flush_deferred_notes is called from five sites across three modules and its no-argument spelling is asserted by tests outside this change.

An absent snapshot is no longer a licence to deliver. authored_link is TWO-state on the shared helper: omitted (an inline caller, which has no authored binding to compare against, which therefore skips only the authored comparison, not the continuation re-ask) or a captured link (compare and refuse on a mismatch). There is no _UNSET sentinel — the third case, a slot with NO binding when the work was authored, is refused at the ONE site that can produce it, chat_note_mirror._deliver_via_transport, whose if authored_link is None: guard returns without delivering. That placement matters: the helper's walk runs when the TASK runs, so passing an unbound slot through would let it read a binding created after authoring and treat that as the authorized destination. Refusing at the capture site's consumer keeps the shared helper two-state and needing no sentinel to tell "absent" from "captured None". That refusal files a denied audit_channel_send row under the reason code unbound_at_authoring, because on an install that HAS channel transports it is a permission decision about a real deliverable surface, and it would otherwise be the only denial on this leg with no SEL record. The exemption is the no-transport install, which stays silent: there the refusal is about the install rather than the request, so a row would fire for every note on every session while naming no destination. The emitter is module-level precisely because a second site refuses on this leg — a hand-written second copy is how a denial stream comes to look complete with one branch missing. A future producer that begins passing authored_link must still carry its own guard for the unbound case; the shared helper does not provide one.

Two duplications collapsed. deliver_to_channel's _walk_ladder closure was a second hand-written copy of snapshot_channel_link's origin→mirror pause-aware loop, so "the snapshot and the delivery agree by construction" actually meant "they agree as long as both copies are edited together" — and a pause-awareness fix applied to one is exactly the divergence the comparison cannot detect. The closure now calls the shared helper. snapshot_slack_link was a pure alias of a private _slack_link with one consumer; the body now carries the public name and the alias is gone.

channel_egress_permitted gains a required tool_name parameter and is public. Slack bypasses the ladder, so without sharing this gate the note's Slack leg would be the one unvetted, unaudited egress. Duplicating a fail-closed gate is how the two copies drift, so this is one function with a parameter rather than two that look alike. tool_name is a caller identity for the SEL record, never a permission input. It is public because it genuinely has two consumers in two modules — this chain and the compaction notice, which imports it from slack_egress — so a private name would advertise a boundary the code does not respect. tool_name carries no default: all three call sites pass it explicitly, and a default would only let a future caller inherit another feature's identity in the SEL record.

The pause gates are honoured on both legs. A note is background rather than turn output, so slack_mirror_is_paused / mirror_is_paused are not strictly aimed at it — but disconnect is the user saying "not into this conversation", which covers a note about it as much as a reply in it, and the dashboard transcript still carries the line either way.

Scope, stated up front. The hardened chain covers the note mirror and nothing else. api_send_message's Slack leg, the owner DM and the hook DM stay plain-client, and the compaction notice takes the shared gate without the rest of the chain, so three proactive-Slack tiers ship here rather than one. Reading the chain as a repo-wide guarantee would be wrong. The tier table below names every site, and a census test fails if a fourth tier appears unmarked.

One caller outside the note feature gains one refusal, and the line is fail-open vs contract-widening. api_send_message shares deliver_to_channel, and the split is by QUESTION rather than by caller.

Asked unconditionally. "Was the permit authorized under the ceiling STILL INSTALLED" needs no captured link: the ceiling is sampled before the target resolve, and that resolve is offloaded because it walks the profile directory, so it is an unbounded await for every caller. Asking this only when an authored link was present was a fail-OPEN — a tightening landing inside that window left the permit authorized under a ceiling no longer installed and part 1 went out on it. governance_changed_during_resolve and governance_changed_before_part_1 therefore apply to every caller, both refuse BEFORE part 1 so nothing is delivered, and test_an_inline_send_refuses_when_governance_tightens_during_resolve pins it.

Gated on authored_link. One question is dispatched-only: "is the live binding the one this WORK WAS AUTHORED FOR" (link_changed_before_dispatch). It compares against the binding a caller captured before its work was queued, and a caller that never captured one has nothing to compare — the parameter is where link comes from on that path, not a switch.

Also asked unconditionally; re-gating is disqualified by measurement, and a maintainer ratification of the widened refusal set is still outstanding. "Is the live binding still the one THIS SEND SELECTED" compares the post-resolve walk against link, this send's own resolved destination, so every caller holds the comparand (link_changed_during_resolve) — and the per-chunk CONTINUATION re-ask asks the same of every later part. Earlier revisions gated both to keep an LLM-facing tool's mid-send contract out of a note change. That was a fail-OPEN, not a deferral: being inline bounds only the window before part 1, every transport send is an await, so a multi-part inline send spans the same window a dispatched one does and parts 2..N were reaching a conversation already unlinked. A mismatch is always a refusal, never a retarget. test_an_inline_send_refuses_when_the_binding_moves_during_resolve and test_an_inline_send_stops_remaining_parts_when_unlinked pin both.

send_message's refusal set changed here, not in its own change. Stated plainly because it is the one cross-cutting effect of this PR: the inline /api/send-message leg now refuses on a superseded governance ceiling, on a binding that moved during its resolve, and between parts once the destination is revoked. Each closes a hole where content reached a conversation the caller had not selected or was no longer permitted; none of them retarget, and none change a permitted send's outcome.

No other generation consumer regresses. governance_answer_generation's signature and contract are byte-identical to base (opaque int, comparison-only). Its four consumers all use it as an equality comparand — ws.py:777 (current != answer_generation, and that file is untouched by this change), state.py:7857 (a cache-invalidation field), slack_egress.py:180, and governance_ceiling_unchanged (== observed) — so publishing one bump per publication instead of two can only reduce FALSE invalidations, never suppress a real one. test_a_publication_moves_the_generation_exactly_once pins both directions: one publication moves it once, and a reload that publishes nothing does not move it at all.

Tests

test/test_note_channel_mirror.py — 117 tests across both legs: delivery, the session-map fallback for a bare slot, paused mirrors, foreign namespaced channel ids refused at the Slack client, swallowed delivery failures, fail-closed governance degradation, non-proactive transports skipped, a Slack link declining to ride the ladder, origin-before-mirror ordering, both legs firing together, recipient authorization on the Slack leg with its SEL audit of every outcome, mid-send revocation aborting the remaining chunks on both legs, revocation timed inside the mid-send re-resolve await, the awaited mirror's overall bound, and the background dispatch not blocking the POST, the held-note case not reaching the channel at POST and reaching it at flush, and the two earliest Slack refusals — a disconnected thread and a foreign namespaced id — each emitting a denied SEL row under its own reason code, with a third test asserting the two codes differ so the rows stay filterable. The endpoint tests share one draining helper that cancels and gathers the background mirror it dispatched, so no task outlives the test that spawned it; a dedicated test asserts that directly, because a leaked task otherwise only ever showed up as a stderr line while the suite still reported green. Two further tests cover recipient authorization across surfaces: a telegram-origin direct session linked to an authorized Slack channel must reach the tracked-channel authority rather than being refused by a principal check that cannot apply to it, with a Slack-origin counterpart asserting the principal path is still consulted so the surface gate cannot be too broad.

No live channel is required. The Slack leg takes a stub client and the neutral leg drives a fake MessagingTransport through the real send ladder, so the nine transports that are unreachable from many corporate networks are covered by the same assertions as Slack.

Negative controls, run per round by neutralising each fix and observing the failure before restoring it. Latest: removing the post-await re-walk in the mid-send path makes the new test fail assert 2 == 1 — part 2 does reach the revoked conversation — and reverting the mirror to unbounded makes the bound test fail Timeout >25.0s. Both detect their defect rather than passing vacuously.

Local gate results:

Gate	Result
flake8 (changed files)	clean
black (baselined gate, check_black_formatting)	passed
isort (src/kiro_crew test conftest.py xdist_budget.py)	clean
mypy (src/kiro_crew/)	1177 source files, no issues
blast radius (141 files)	8753 passed

Affected suites run: test_gateway_appkit_endpoints, test_cross_surface_mirror, test_channel_compaction_notice, test_channel_compact_failure_binding, test_chat_mirror, test_channel_transport_outbound_authz, test_messaging_transport, test_redaction_mirror_parity, test_slack_mirror_context_leak, test_ci_surface_tests.

Echo-loop check

The mirror posts into a thread the gateway also listens on, so inbound must not ingest it as a user turn. Verified at two independent points: slack/transport.py drops bot_id / subtype == "bot_message" before authorization, and slack/events.py does the same with a SEL untrusted_bot denial. Telegram filters on its own bot_id. The compaction notice already uses this exact egress.

Not traced: the from_trusted_bot branch in slack/events.py, which is a separate code path.

Behaviour change beyond /note

Closing the caller-supplied-link TOCTOU moved the ladder walk, the pause skip and the post-await revalidation into handlers/messaging.deliver_to_channel, which is shared. MID-SEND REVALIDATION IS UNCONDITIONAL, and it widens api_send_message's refusal set deliberately. An earlier revision keyed it on authored_link so the inline caller kept its exact prior behaviour; that was wrong, because being inline bounds only the window between the REQUEST and the FIRST part. Every part is an await, so a multi-part inline send spans the same inter-part window a dispatched one does, and its later parts reached a destination the user had already unlinked. The post-resolve re-walk (link_changed_during_resolve) and the per-chunk re-asks therefore run for EVERY caller. What authored_link still gates is only the authored-link COMPARISON — "is the live binding the one this work was AUTHORED for" — which needs a captured link and so remains dispatch-only. For api_send_message this adds seven reason codes, not one: three that can refuse before the first part (a binding or governance ceiling replaced while the permit resolved) and four that fire only on a later part. A send the resolve permitted CAN now be refused before part 1, which the earlier wording denied. deliver_to_channel still answers with a bool and LOGS which ladder row it selected rather than returning it, so its existing caller is unchanged.

That is why test/test_send_message_targeted.py is in this diff: test_cron_job_session_key_is_used_verbatim asserted assert_called_once_with on the link getter, which encoded the old single-read behaviour. It now pins call_args_list so every call is checked for the whole session key — the property that test is actually about — rather than only the first.

Bounds and known asymmetries

The mirror is bounded per leg, not per request. Each delivery leg carries its own _LEG_TIMEOUT_S and absorbs its own stall or raise, so a wedged channel cannot starve a healthy sibling. That bound now lives entirely inside the mirror: the endpoint dispatches it in the background and never waits, so no outer ceiling exists or is needed. A channel that cannot be reached simply does not receive the note; the failure is logged and SEL-audited rather than reported to the caller.

Held-note / rebind window — CLOSED. Two earlier revisions of this description got this wrong in opposite directions: the first claimed "a rebind cannot leave a channel showing a note the agent never receives", the second accepted that it could. Both are withdrawn. A held note is not mirrored at POST, so the window in which the channel held a note the transcript and context did not cannot arise; and it is no longer left unmirrored either, because the flush dispatches it once both halves land. A note whose slot was rebound to another session during the hold is dropped by the rebind guard before the write, and dispatches nothing.

Keying the mirror to the same flush-time condition is the better fix and is what ships. flush_deferred_notes is a synchronous _ChatSlot method with no back-reference to DashboardState, so it cannot resolve destinations itself; the held record carries a bound dispatch instead, which is also why no call site changes spelling. It now has six invocation sites across three modules, one of them a teardown handing its key to a concurrent same-key recreate, where the halves do commit and the key stays open, so provenance there is wanted rather than suppressed.

Accepted and deferred — declared, not carried silently

The hardened Slack send lives in its own module, and the note mirror runs it. The chain (governance gate → recipient authorization → coordinate and pause revalidation after every await → chunking → abort-on-revocation) is _deliver_slack_governed in the new dashboard/slack_egress.py, beside channel_egress_permitted and _slack_recipient_basis. It began inside chat_compaction_notice because that was its first consumer, which homed a cross-feature boundary in a feature-named module — the next caller either misses it or copies it, and a copied egress check stops being re-verified. The note mirror is its ONE consumer. The compaction notice deliberately stays on the bare channel_egress_permitted gate it imports from slack_egress: adopting the full chain there would widen an existing surface's refusal set, which is a behaviour change to a surface this PR does not otherwise need to touch, so it is deferred alongside the three other proactive Slack sends _deliver_slack_governed's docstring names. test_a_recipient_no_authority_names_is_still_delivered pins that unhardened posture, so adopting the chain later has to be a reviewed change rather than a silent rider. Slack is deliberately absent from channel_transports, so it never reaches _resolve_channel_target's ladder and gets none of that protection for free; this is where it lives instead, in one copy rather than two that drift.

The tier map now has a named owner, not a promise. The three proactive-Slack tiers this change leaves in place (the full chain here, the gate-only compaction notice, and plain client for api_send_message's Slack leg, the owner DM and the hook DM) are pinned by a census test that fails if a new dashboard module sends to Slack unclassified, or if the plain-client tier changes size. The deferred sites are enumerated by symbol in docs/system-specs/modules/messaging.md, alongside the tier map the census test pins executably, so the follow-up is a named inventory rather than a docstring sentence. That inventory deliberately stops at the INVENTORY: it names each deferred sibling and the profile-store cold load, and it prescribes no design for the consolidation. Two earlier revisions went further and both were subtracted at a reviewer's request -- a seven-step forward plan (including a binding-generation counter), because a design nobody is committed to build is speculation, and then the separate RFC document that carried it, because the only parts the census test and the spec actually lean on are the tier map and the symbol-named inventory, and those belong with the module they describe. Filing a tracking item is a maintainer action.

The held-note pinning tests are mandatory, not advisory. TestAHeldNoteMirrorsAtFlush and test_a_rebound_slot_drops_the_held_note_without_mirroring both live in test/test_note_channel_mirror.py, which carries zero skip, skipif or xfail markers, and CI's backend job has no deselect list at all (its own comment records that BACKEND_DESELECTS was removed deliberately) and never names this file. Every backend shard therefore collects them and neither can be skipped on a runner.

There are now TWO revalidation chains, and consolidating them is a declared follow-up rather than work this change withholds. deliver_to_channel re-walks the transport ladder per chunk; _deliver_slack_governed re-asks _permitted_to_send per chunk. What is genuinely shareable between them is only the per-chunk loop driver. What is NOT shareable is everything the loop guards: the authority sets differ (Slack sits outside channel_transports and never reaches the ladder at all), the delivery-confirmation predicate differs, and the audit vocabulary differs. handlers/messaging.py does not import slack_egress, so the shared piece could not move between those two; it lives in the module both already import, as send_parts_revalidating in kiro_crew/messaging/renderer.py. That per-chunk loop driver IS extracted here and both chains now run through it. What remains unshared is what the loop guards, which is the list above.

Two consequences worth stating plainly:

• The compaction notice's failure surface is UNCHANGED. An earlier revision of this branch did adopt the chain there, which would have refused a notice when no authority names the recipient or on a mid-send rebind. That adoption was withdrawn: the notice is governance-vetted and audited exactly as before, and still sends on the link it read. The widened refusal belongs in the change where it is the subject under review.
• A thread is no longer required by the shared helper. The guard it replaced (_is_genuine_slack_link) demanded a thread and a channel, which is right for a note and wrong for a notice: a session bound to a channel with no thread posts top-level, and requiring a thread would have silently dropped its notices. What that check is actually for is refusing another channel's legacy namespaced id, which has nothing to do with threads — so the namespace half is shared and the thread half stays with the note leg as its own local precondition. Pinned by a test that fails when the thread requirement is reinstated.

The note mirror passes a pause predicate; is_paused is a REQUIRED parameter of the shared send, so no adopter can omit the check by accident. The compaction notice does not call that helper at all, so the question does not arise for it.

api_send_message's failure surface IS widened, and that is intended. The shared deliver_to_channel gained a post-await re-walk and a per-chunk re-ask, and NEITHER is gated: both run for every caller, so the mid-send TOCTOU is closed for api_send_message too rather than left open. The widening is SEVEN new reason codes, six refusals and one error, none gated on authored_link and so all reachable by the inline caller. Three can refuse before the first part goes out at all (link_changed_during_resolve, governance_changed_during_resolve, governance_changed_before_part_1); the other four fire only on a part after the first (not_permitted_mid_send_before_part_N, link_changed_during_recheck_before_part_N, governance_changed_mid_send_before_part_N, and the error resolve_failed_mid_send_before_part_N). An earlier revision of this description claimed one refusal and claimed nothing permitted at part 1 could be refused; the governance-ceiling sampling added later made both false, and they are corrected here rather than left to read as the smaller change. Exactly one refusal stays dispatched-only, and not by choice: link_changed_before_dispatch compares against the binding a caller CAPTURED before its work was queued, so a caller that captured none has no comparand. The note mirror is dispatched to a background task and can be overtaken by a rebind, which is why it captures one. test_revalidation_covers_both_callers_and_authored_link_gates_comparison pins the split by measuring ladder walks on both paths. Named plainly: this is a tightening of a surface this change is not otherwise about. The note mirror is the feature; api_send_message inherits the closure because the helper both callers share is where the TOCTOU lives, and gating it to the mirror alone would leave the same hole open for the LLM-facing caller.

Seven resolve-then-send siblings remain unfixed, named explicitly. The post-await revalidation now covers the shared deliver_to_channel and, via _deliver_slack_governed, the note mirror's Slack leg. These seven sites across five symbols still send on a link captured before their governance await, with no re-walk (api_chat_slot_mirror_link carries three of them):

Site	Caller
state.py _notify_inbound_unbind	inbound-unbind notify
chat_mirror.py api_chat_slot_mirror_link	provisional-link resolve
chat_mirror.py api_chat_slot_mirror_link	turn-reply mirror
chat_mirror.py api_chat_slot_mirror_link	mirror re-delivery
slack/gateway.py _deliver_channel_reply	Slack parent-key reply
handlers/messaging.py _deliver_channel_dm	api_send_message's Slack leg

Each was re-verified by SYMBOL at the current tree, not inferred: line citations from the original base had drifted, and one (state.py) pointed at a function that performs no send. Fixing them is a general change across four more modules and belongs in its own PR; naming them here so the gap is not mistaken for coverage, and so whoever takes it has the inventory.

Out of scope

A note's transcript row can be replayed into a new session on a cold start (is_new and not _provider_has_history), so the model may see it twice in one prompt. That is pre-existing, documented in the endpoint's own docstring, and a deliberate tradeoff — the replay is char-budget bounded, so dropping the queued copy would lose older notes the replay had already trimmed. This change adds no transcript row and neither causes nor worsens it.

[dwu96]

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[github-actions]

Design Review (Fable 5, fork) — 🟡 CONCERNS

Design-level review of 9524c478cf96c4059246d10f290e8c5fcabc7ff2 via the fork AI-review pipeline — updated in place on each push. A BLOCK verdict blocks PR readiness; PASS/CONCERNS are advisory.

Design-Verdict: CONCERNS

Sound feature and a well-argued TOCTOU closure, but it deliberately widens send_message's refusal set and the spec itself says maintainer ratification is outstanding.

Watch

• api_send_message inherits seven new refusal/error codes from the shared deliver_to_channel hardening — a permitted multi-part send can now be refused before part 1 or aborted mid-send under governance/profile churn, leaving a delivered prefix. The direction is well-defended (re-gating is pinned as fail-open by two tests), but the spec's own words are "a maintainer ratification of the widened refusal set is still OUTSTANDING," so this scope decision needs an explicit human yes, not a silent merge.
  Clears when: a maintainer explicitly acknowledges the widened /api/send-message refusal set in the PR record.
• Every immediate (non-held) note POST now awaits save_slot_off_loop(best_effort=False) — a forced disk write under the history lock — even when snapshot_note_destinations would return nothing, so channel-less installs pay a per-note flush for a mirror that never fires, and the description doesn't declare the latency change.
  Clears when: the durable-write gate runs only when at least one destination was snapshotted, or the per-note flush cost is explicitly accepted.

Suggestions

• Reason codes embedding the part index (..._before_part_{N}) have unbounded cardinality, undercutting the "operator filters on a stable code" contract stated in audit_channel_send; keep the code fixed and put the index in resources.

[DESIGN-REVIEWED] 9524c47

[github-actions]

GPT 5.6 Review (fork) — 🔴 changes requested (blocking)

Reviewed 9524c478cf96c4059246d10f290e8c5fcabc7ff2 via the fork AI-review pipeline; updated in place on each push.

1 of 1 blocking finding(s) are security-class and were withheld from adjudication, so the blocking verdict stands.

BLOCKING -- src/kiro_crew/dashboard/chat_handlers.py:10622 -- Await permits accepted note loss during an unbound-slot rebind
mirror_backed_by_transcript = await _immediate_note_is_durable(state, slot)
Immediate note -> cron/workflow binds during save -> guarded save returns false -> next drain drops both halves while the endpoint returns 200.
Anchor: residual/crash-data-loss-corruption
Fix: Treat a false save result as failed acceptance and roll back both halves before returning an error.

FINDING -- src/kiro_crew/dashboard/chat_handlers.py:10586 -- "durable copy carries the destinations" contradicts serialization, which omits them and cannot rebuild the mirror after restart -> Fix: state that destinations and the mirror are in-memory only.

[BLOCK-MERGE] 9524c47
[GPT-REVIEWED] 9524c47

Adjudication (Opus 4.8) — is blocking on each finding proportionate?

F1 (fenced) — the note-loss it describes is the pre-existing conditional-delivery contract for an UNBOUND slot, not a new silent loss introduced by the awaited save.

Harm rung: nominally unbounded (silent data loss), but the loss is signaled and pre-existing.

• Conditions confirmed: immediate path requires not deferred (chat_handlers.py:10416); both halves are stamped noteSession = effective_session_key(slot) at write time (chat_handlers.py:10473, 10540); drop requires an UNBOUND slot whose delivery is already deliveryConditional (chat_handlers.py:10557); the guarded best_effort=False save returns False on a routing change (chat_persistence.py:3722-3739, 2729); both halves are then dropped at drain when the live session differs (state.py:2549-2559).

• Recovery/visibility: the 200 carries "deliveryConditional": true (chat_handlers.py:10563, docstring 10551-10557) — the caller is explicitly told delivery to a session may not land, so the loss is NOT silent. The awaited save only gates the best-effort channel mirror (correctly skipping it for a rebound note); it does not create the halves-drop, which is the documented unbound-slot behavior independent of this PR.

• Rarity/fix cost: reaching it needs an unbound slot receiving an immediate note AND a cron/workflow binding within one off-loop save window, yielding exactly the conditional-delivery outcome the caller was warned of. The proposed roll-back-and-error fix would regress that intended contract and add rollback state plus an error branch for an already-reported case — a residual a writer would plausibly accept.

  [ADJUDICATION] 9524c47 total=0 uphold=0 downgrade=0
  [GPT-ADJUDICATED] 9524c47
  [ADJUDICATION-FENCED] 9524c47 fenced=1 flagged=1
  FLAG F1 src/kiro_crew/dashboard/chat_handlers.py:10622 -- The dropped halves are the pre-existing unbound-slot conditional-delivery outcome, reported to the caller via deliveryConditional=true (chat_handlers.py:10563); the awaited save only gates the best-effort mirror and introduces no silent loss, so a writer would plausibly accept the narrow bind-during-save residual.
  [GPT-ADJUDICATED-FENCED] 9524c47

🏷️ Fenced finding(s) machine-flagged as likely edge case

The security fence keeps these findings blocking regardless of adjudication; the only clearance path is a human override recorded by a repository writer, who must independently verify a rationale before recording it — it is machine-authored, and a wrong override on a security-class finding ships exactly the class the fence exists to stop. (This lane's comment deliberately carries no override command.)

• F1 src/kiro_crew/dashboard/chat_handlers.py:10622 — The dropped halves are the pre-existing unbound-slot conditional-delivery outcome, reported to the caller via deliveryConditional=true (chat_handlers.py:10563); the awaited save only gates the best-effort mirror and introduces no silent loss, so a writer would plausibly accept the narrow bind-during-save residual.

[github-actions]

First Principles Review (Fable 5, fork) — 🟡 CONCERNS

Premise-level review of 9524c478cf96c4059246d10f290e8c5fcabc7ff2 via the fork AI-review pipeline — why this exists and whether the shipped surface is the smallest honest version. Updated in place on each push. A BLOCK verdict blocks PR readiness; PASS/CONCERNS are advisory.

All verification done. The author's countable claims check out against the base (0 mirroredTo hits, 6 flush sites in 3 modules, 1 pre-existing deliver_to_channel caller, both sibling gate copies real, context half genuinely surface-agnostic via chat_runner.py:7235). No deleted pins — tests are additions and re-pointed patch targets. The one mechanical defect I verified in the base: the immediate-note path at chat_handlers.py:10535 does no persistence today, and the PR adds a forced durable save there before any check that a mirror destination exists.

First-Principles-Verdict: CONCERNS

Every immediate /note now pays a forced disk save before anything checks a channel destination exists — channel-less installs fund a mirror that never fires.

Not justified as shipped

• Item 3 — oversized: _immediate_note_is_durable runs unconditionally on the non-held path; snapshot_note_destinations is synchronous and cheap, so the destination check belongs before the disk write, not after.
• Item 7 — duplicate of src/kiro_crew/dashboard/handlers/messaging.py: the sample→resolve→walk→re-ask protocol is hand-spelled twice (there and slack_egress._deliver_slack_governed), sharing only send_parts_revalidating (2 consumers, counted); self-declared, divergence-pinned, consolidation deferred.

What this change ships

Intent: a user driving a session from a channel sees the /note their agent was given, and a multi-part channel send stops when its permission or binding is revoked mid-send — an ADDITION (the mirror) carrying a declared FIX (the TOCTOU). Capped at 10; docs, the security_posture sink row, and the OFFERED_ACTIVATIONS dedup are omitted.

1. A /note's visible line now also arrives in the session's bound channel, background, best-effort, unreported — justified
2. A held note mirrors at flush once both halves commit; dropped notes never mirror; restarts drop the mirror — justified
3. Every immediate /note POST performs a forced durable slot save, even with no channel bound — oversized, save precedes the destination check
4. Channel notes carry a 📝 [note] label and an end-of-note terminator — justified
5. send_message's channel leg gains mid-send refusals (binding moved, governance narrowed, per-part re-asks) — justified
6. Governance generation now bumps atomically with snapshot publication, never for a no-op reload — justified
7. A hardened Slack chain (recipient authorities, per-chunk re-ask) with exactly one consumer — duplicate of the transport-leg protocol, see above
8. Compaction notice resolves through the shared ladder, deleting its hand-written walk — justified
9. New SEL rows for note-leg outcomes; refusal rows name the selected transport, not the caller's filter — justified
10. _source_cap_reached reads held context once via .get(), behavior unchanged — rides along

Watch

• Item 5 widens the refusal set of the pre-existing inline send_message caller (1 caller counted at base), and the description itself says "A maintainer ratification of the widened refusal set is still OUTSTANDING." The direction is pinned by two fail-open tests; the scope decision is not.
  Clears when: a maintainer explicitly approves the new inline mid-send denial reasons on this PR.
• Item 7's two protocol spellings will drift exactly the way this PR's own _walk_ladder copy did; TestTheRevalidationProtocolCannotDivergeSilently pins the shape but not the semantics of future edits.
  Clears when: the deferred consolidation lands, or a third consumer forces it.

Subtractions

• In chat_handlers.py::api_chat_slot_note, hoist snapshot_note_destinations above _immediate_note_is_durable and skip the save (and dispatch) when the Slack pair is empty and the channel link is None — deletes one durable write per note on every install with no channel binding.

[FIRST-PRINCIPLES-REVIEWED] 9524c47

[github-actions]

Opus 4.8 Review (fork) — ✅ no blocking findings

Reviewed 9524c478cf96c4059246d10f290e8c5fcabc7ff2 via the fork AI-review pipeline; updated in place on each push.

Review details

I've traced both candidates against the actual base-branch source.

Candidate 1 (immediate-note mirror retargets on rebind during the durability save): _immediate_note_is_durable calls save_slot_off_loop(..., expected_history_key=slot_history_key(slot), best_effort=False). _save_slot_to_history re-reads slot_history_key(slot) at write time (chat_persistence.py:2723-2742) and returns False — nothing written — whenever the routing moved off expected_history_key. A rebind landing during the save therefore drives mirror_backed_by_transcript = False, and the if not deferred and mirror_backed_by_transcript: guard skips the dispatch entirely. That compensating guard closes the window the candidate names; what remains is a sub-tick TOCTOU (rebind landing between the worker's routing read/commit and the coroutine's resume), and the "foreign user's channel B" premise is unsubstantiated — the concurrent linked_session_key writers (cron_inject, workflow_inject) rebind to the same user's cron:/workflow: keys, not a foreign human's channel, and inbound-channel paths create new slots rather than rebinding an in-use one. (a) does not occur "in practice"; it is a race, not a concrete input.

Candidate 2 (thread-less Slack-only binding files a phantom unbound_at_authoring): reachability of a /note target whose session carries slack_channel_id set with empty slack_thread_ts, plus a populated channel_transports and no non-Slack link, is unconfirmed — a "could." Even granting it, the harm is a single misleading SEL audit row (advisory, not a crash/leak/data-loss/removed-guard), and the proposed fix ("key on the channel id") would not work, since _snapshot_slack_link deliberately zeroes both coordinates when the thread is absent, so slack_link[1] is empty too. Fails the 80+ bar and is at most advisory.

Neither survives falsification.

No findings.

[OPUS-REVIEWED] 9524c47

[rnoack1]

Head sha 55763eae3689c2bc0ecbd464c509202bd9ba594c.

You were right that the description and the code had drifted, and the drift turned out to sit in a different place from the paragraph you quoted. Two functions were made public earlier in this PR at the First Principles reviewer's request, and the description still named the private forms: _deliver_to_channel in six places and _audit_channel_send in one. Anyone grepping either name found nothing. Both are corrected at this head.

On the paragraph itself, the text you quoted is not what the description carries. It currently opens:

An absent snapshot is no longer a licence to deliver. authored_link is TWO-state on the shared helper: omitted (an inline caller, which has no authored binding to compare against, though it now revalidates mid-send exactly as a dispatched caller does) or a captured link (compare and refuse on a mismatch). The third case, a slot with NO binding when the work was authored, is refused at the ONE site that can produce it, chat_note_mirror._deliver_via_transport.

So the three-state framing and the _UNSET mechanism are already gone. _UNSET appears once, in a denial: "keeps the shared helper free of a sentinel, so no _UNSET exists". The paragraph names the guard site you asked for, and it closes on the risk you raised about the next producer: one that begins passing authored_link must carry its own guard for the unbound case, because the shared helper does not provide one.

The audit row is the one item where I read the code differently from you, so here is what I read. The guard at src/kiro_crew/dashboard/chat_note_mirror.py:530 calls audit_channel_send at :549 with reason="no_authored_channel_link". That helper is defined at src/kiro_crew/dashboard/handlers/messaging.py:1563 and writes an SEL row at :1589, with resources=f"channel_type={channel_type} reason={reason}" at :1594. So the refusal is filterable by that reason code and not a log line only. It is the branch your review left open: "if the audit row is wanted, emit it and keep the claim."

For the sentinel claim, the counts at this head are _UNSET and _Unset at 0 in handlers/messaging.py, against 17 module-level constants in the same file as a positive control, so the zero is a fact about the file rather than about my query.

[rnoack1]

Head sha f406b97f840d9c98fe1b7af8e0a10824c46623f1. Every item in your review is satisfied at this head. Taking them one at a time, with what I read.

The paragraph you quoted is not what the description carries. The three-state framing is gone: "THREE states", "has THREE", "only two may deliver", "A module-level" and "SEL-audited as" all count zero, checked with whitespace collapsed so a line break cannot hide a match, against a live control (authored_link appears 3 times by line and 7 with newlines collapsed, so the normalizer is doing something). It reads "authored_link is TWO-state on the shared helper" and names the guard at its one consumer, chat_note_mirror._deliver_via_transport, which is the rewrite you asked for. _UNSET survives once, as a denial: "keeps the shared helper free of a sentinel, so no _UNSET exists".

No sentinel and no isinstance gate in the shared helper's module. _UNSET and _Unset are both zero in src/kiro_crew/dashboard/handlers/messaging.py, against 17 module-level constants in that file as a control, so the zero is a fact about the file rather than about my query. isinstance(..., _Unset) is likewise zero against 124 plain isinstance( calls.

The SEL row does exist, and this is the one place I read the code differently from you. You have it as logging the outcome rather than writing an SEL row. The guard is at src/kiro_crew/dashboard/chat_note_mirror.py:573, and it calls audit_channel_send at :591 with reason="no_authored_channel_link" at :596. That helper is defined at src/kiro_crew/dashboard/handlers/messaging.py:1563 and writes _sel().log_tool_invocation at :1589, carrying resources=f"channel_type={channel_type} reason={reason}" at :1594. So the refusal is filterable by that reason code, not a log line only. That is the branch your review left open: "if the audit row is wanted, emit it and keep the claim."

Two things worth flagging since you last looked, both from your review rather than around it.

Your objection was that the description described behaviour the code did not have, and I had introduced a second instance of exactly that, in the other direction. The description still said a held note reaches no channel and called flush-time mirroring the remaining enhancement. That is no longer true: a held note now carries the destinations it was authored for on its held record, and flush_deferred_notes dispatches them once both halves commit. Snapshotting at authoring rather than at flush is what keeps the guarantee you were protecting, because a channel rebind during the hold then makes the send refuse on the comparison instead of retargeting. I have corrected those paragraphs, so the description and the code agree again.

Also worth knowing: three CI lanes are red on this head and none of them are reachable from this branch. Backend Tests (3.12, 4), Backend Tests (Windows) (4) and the derivative Coverage Gate fail on a test that arrived on main in "fix(dashboard): preserve concurrent same-key recreate during slot-close teardown", which times out at 120s. Every open PR whose head predates that commit has that shard green and every one after it has it red, so no sha here clears it and a rebase inherits it.

[rnoack1]

Head sha 40aa27d863ef5ab62cdd35992c59525accdd47c8. All of it is satisfied at this head, and I owe you a correction on one point first.

Correcting my earlier reply. I said the SEL row was the one place I read the code differently from you. That was wrong, and the framing was unfair. I went back and read the commit your review was written against, 685708b64: no_authored_channel_link appears zero times in the mirror module there, and audit_channel_send is not defined anywhere in the messaging module, so the emitter did not exist either. You were right on both halves. The row and its emitter landed in a later round, which means the prose was asserting an audit trail that genuinely was not written when you read it, exactly as you said. Your risk paragraph was the correct read of that sha, not a misreading of it.

Taking your items one at a time, with what I read at this head.

Two states, not three. One of the three lines you cited now carries the statement itself. src/kiro_crew/dashboard/handlers/messaging.py:1521 reads "authored_link has TWO states: omitted (an inline caller, revalidated against this call's own walk and keeping its existing refusal set), or a captured link", and :1524 continues "The caller that captures a snapshot owns the third case, an authoring slot with NO binding at all, and refuses before it reaches here". So the shared helper is two-state and says so where you looked.

No sentinel, no isinstance gate. _UNSET and _Unset are both zero in handlers/messaging.py, against 17 module-level constants in that file as a control, so the zero is a fact about the file and not about my query. isinstance(..., _Unset) is zero too, against 124 plain isinstance( calls.

The audit row now exists, which is the second branch you offered. Your required change allowed either dropping the claim or emitting the row and keeping it. The row is emitted: src/kiro_crew/dashboard/chat_note_mirror.py:591 calls audit_channel_send with reason="no_authored_channel_link" at :596, and that emitter is defined at handlers/messaging.py:1563, writing _sel().log_tool_invocation at :1589 and carrying resources=f"channel_type={channel_type} reason={reason}" at :1594. So the refusal is filterable by that reason code rather than being a log line only. You flagged that adding it back re-adds part of what the subtraction removed, and that is true: what came back is the row, not the sentinel.

Where the guard lives, and your line numbers. The guard is if authored_link is None: at chat_note_mirror.py:573, inside _deliver_via_transport which begins at :543. Your :326 now lands on an unrelated try:, so the coordinate drifted rather than the code moving away from your description of it. The prose names _deliver_via_transport as the consumer, which is the part you noted was missing.

One thing worth naming in case it is what you saw. A _UNSET sentinel does exist in src/kiro_crew/dashboard/chat_handlers.py, defined at :8178 and used at :8745. It is not on this path and not from this change: it defaults the request body's maxAge, that file carries no authored_link reference at all, and this change adds and removes no line containing it.

[rnoack1]

Head sha 54ae7d714dd36dcf98585be5e8f4ccb02900b5bb. Re-read at this head, with the line numbers I gave you earlier corrected where they have moved.

Correcting three coordinates first. My previous reply was written against a head that has since been rebased twice, and three of the numbers I gave you for src/kiro_crew/dashboard/handlers/messaging.py have shifted by three lines because an upstream change landed above them. They now read:

what	I said	at this head
def audit_channel_send	:1563	:1560
its _sel().log_tool_invocation(	:1589	:1586
its resources=f"channel_type={channel_type} reason={reason}"	:1594	:1591
the two-state comment	:1521	:1518

The coordinates in src/kiro_crew/dashboard/chat_note_mirror.py have not moved.

One naming point, because it affects searching. The emitter is spelled audit_channel_send, with no leading underscore. Searching for _audit_channel_send returns zero hits in both files, so if that is the spelling you looked for, an absent result would have been a fact about the name rather than about the code. The public form appears five times in the mirror module.

Your items at this head, each with what I read.

authored_link is two-state, not three. Correct, and the code states it. handlers/messaging.py:1518 reads "authored_link has TWO states", and the lines under it assign the third case to the capture site rather than to the shared helper.

No _UNSET / _Unset sentinel at module level in handlers/messaging.py. Correct. Both spellings count zero in that file, against 17 module-level constants there as a control, so the zero is a property of the file and not of my query.

No isinstance(..., _Unset) gate on the revalidation path. Correct. Zero, against 124 plain isinstance( calls in the same file.

The no_authored_channel_link row. This is the one item where the code at this head differs from your reading, and as I said last time you were right about it at the commit you reviewed. At this head the guard is if authored_link is None: at chat_note_mirror.py:573, inside async def _deliver_via_transport( which begins at :543. It calls audit_channel_send at :591, passing reason="no_authored_channel_link" at :596. That emitter is defined at handlers/messaging.py:1560 and writes _sel().log_tool_invocation at :1586, carrying resources=f"channel_type={channel_type} reason={reason}" at :1591. So the refusal is filterable by that reason code rather than being a log line only.

Nothing in the change is owed against these items at this head. If you would rather I re-state any of them against a specific line you are reading, name it and I will read that line rather than paraphrase.

[rnoack1]

Head sha 54ae7d714dd36dcf98585be5e8f4ccb02900b5bb. My earlier reply on this head answered the code half of your mismatch finding and left the description half unstated, which is the half that actually settles it. Both sides now agree, and the prose you quoted is no longer in the description.

The paragraph you quoted is gone. Searching the live description, THREE states, three states, three-state, only two may deliver and A module-level all count zero. The paragraph that replaced it opens "authored_link is TWO-state on the shared helper", and states the subtraction explicitly rather than leaving it implied: "keeps the shared helper free of a sentinel, so no _UNSET exists". So the description now describes the two-state behaviour that ships, and it says in as many words that the sentinel does not exist.

The description does still contain the two tokens _UNSET and no_authored_channel_link, once each, and both are inside that same replaced paragraph. _UNSET appears only in the clause denying it exists. no_authored_channel_link appears as documentation of the audit row that does now exist, naming the module that emits it.

Your three code claims, word-boundary counts at this head. In src/kiro_crew/dashboard/handlers/messaging.py: _UNSET as a whole word is 0, _Unset is 0, and a module-level ^_UNSET = binding is 0, against 17 module-level constants in that file as a control. isinstance(..., _Unset) is 0, against 124 plain isinstance( calls. Correct on both counts.

The three lines you cited now hold comments rather than gates. messaging.py:1471 is a comment about the conventions a transport follows, :1521 is a comment assigning the third case to the capture site, and :1624 is a comment about link mismatch. The declaration you were looking for is at :1518, which reads "authored_link has TWO states".

no_authored_channel_link counts 0 in messaging.py, which matches what you read. It is 2 in src/kiro_crew/dashboard/chat_note_mirror.py and 5 in test/test_note_channel_mirror.py. The guard is if authored_link is None: at chat_note_mirror.py:573, and it reaches the emitter defined at messaging.py:1560. A fabricated token returned 0 across the same search, so those zeros are properties of the files rather than of the query.

Nothing is owed on this finding at this head, in code or in prose. No new commit was needed to close it, so the head has not moved since my previous reply.

[rnoack1]

Head sha 71951cf6d345b9272785ed890b356f0397d6712b. Your items are satisfied here. My earlier reply named a head three pushes back and its line numbers have since moved, so these are re-read from this one.

The paragraph you quoted is gone from the description. THREE states, A module-level and only two may deliver each count zero. It now opens "authored_link is TWO-state on the shared helper" and states outright "no _UNSET exists".

No module-level sentinel. In src/kiro_crew/dashboard/handlers/messaging.py, _UNSET and _Unset as whole words both count zero, against 17 module-level constants in that file as a control. You were right about this.

No isinstance gate on the revalidation path. isinstance(..., _Unset) counts zero, against 126 plain isinstance( calls in the same file. Also right. The declaration you were looking for is at messaging.py:1558, which reads "authored_link has TWO states".

The audit row does exist, and this is the one place the code differs from your reading. The guard is if authored_link is None: at src/kiro_crew/dashboard/chat_note_mirror.py:573, and it passes reason="no_authored_channel_link" at :596 into the emitter defined at handlers/messaging.py:1600. The logger line comes after that call, not instead of it, so the refusal is filterable by that reason code rather than only readable in a log. Two occurrences of the reason string in that module.

A fabricated token returned zero across the same searches, so those zeros are properties of the files rather than of the query.

[rnoack1]

Head sha b09aaff038957a802c99d5fdb496c099d66d61d3. Both halves of your finding are settled here. I have given you line numbers three times now and two of them have drifted again since my last reply, so this one leads with search strings that do not move.

Verify without line numbers. Each of these is unique in the file named:

what	where	search for
the two-state declaration	src/kiro_crew/dashboard/handlers/messaging.py	has TWO states
the refusal guard	src/kiro_crew/dashboard/chat_note_mirror.py	if authored_link is None
the audit reason	src/kiro_crew/dashboard/chat_note_mirror.py	no_authored_channel_link
the emitter it calls	src/kiro_crew/dashboard/handlers/messaging.py	def audit_channel_send

At this head those sit at messaging.py:1558, chat_note_mirror.py:572, :595 and messaging.py:1600. The guard and the reason moved up one line from the numbers in my previous reply, which is why the anchors above are the better handle.

The paragraph you quoted is gone. In the current description, THREE states, three-state, A module-level, only two may deliver and SEL-audited as each count zero. It now opens "authored_link is TWO-state on the shared helper" and states "no _UNSET exists".

The sentinel: you were right, and here is the thing that will trip a grep. There is no _UNSET or _Unset in handlers/messaging.py, as whole words or as a module-level binding, against 17 module-level constants in that file as a control, and no isinstance(..., _Unset) against 126 plain isinstance( calls. But _UNSET does exist in three unrelated files, so a repo-wide grep will find it and look like it contradicts the claim. None of the three is on this path: one is a request-body default for maxAge, and the other two are a platform fallback sentinel and a lazily-built sandbox value. All three carry zero references to authored_link.

The audit row: this is where the code differs from your reading. The refusal is not log-only. The guard sits inside async def _deliver_via_transport(, and it passes reason="no_authored_channel_link" into audit_channel_send before the logger line, not instead of it. The reason string appears twice in that module and five times in its test. So the refusal is filterable by that reason code, which was the risk your review named.

A fabricated token returned zero across the same searches, so those zeros are properties of the files rather than of the query.

[rnoack1]

Head sha 30857110cef3f56d4e8356753317925e87ba70f2. Re-read both halves at this head rather than carrying over an earlier check. They resolve differently, so taking them one at a time.

The sentinel: correct, and the description already agrees with you. There is no _UNSET or _Unset in src/kiro_crew/dashboard/handlers/messaging.py, as whole words or as a module-level binding, against 17 module-level constants in that file as a control and 126 plain isinstance( calls for the type-test form. authored_link is two-state: the signature at messaging.py:1645 is tuple[ChannelLink, bool] | None = None and the only gate is if authored_link is not None: at :1762. The paragraph you quoted is gone from the description. THREE states, three-state, A module-level, only two may deliver and SEL-audited as each count zero there now, and it reads "authored_link is TWO-state on the shared helper".

One thing worth flagging, because it will look like a contradiction: a repo-wide grep for _UNSET does find three files. None is on this path. One is a request-body default for maxAge, the other two are a platform fallback sentinel and a lazily-built sandbox value, and all three carry zero references to authored_link.

The audit row: this half has changed since your review. It is emitted. src/kiro_crew/dashboard/chat_note_mirror.py:600 passes reason="no_authored_channel_link" into audit_channel_send at :595 with outcome="denied" at :599, under the guard if authored_link is None: at :577. The logger line comes after that call, not instead of it, so the refusal is filterable by reason code. The string appears twice in that module and five times in its test.

That was a fair call when you made it. Checking the commit your review was written against, neither the reason string nor the emitter existed there. The row landed in a later round.

On the security property, since it is the thing the paragraph was really claiming: it still holds without a third state. The refusal moved rather than being dropped. A captured None means the authoring slot had no channel binding, and chat_note_mirror.py refuses that at :577, upstream of the shared helper, at the only site that can produce it. That is why the helper needs no sentinel to tell "absent" from "captured None".

Use search strings, not line numbers. These have now drifted twice while this was open: the guard and the reason moved five lines between my last reply and this one. if authored_link is None and no_authored_channel_link are each unique in that file, and has TWO states and def audit_channel_send are each unique in handlers/messaging.py.

A fabricated token returned zero across the same searches, so the zeros above are properties of the files and not of the query.

[rnoack1]

Head sha 02f236bce6def80e8936a4f01cbdd464fdd531c5. Re-read both halves at this head rather than carrying over an earlier check. They land differently, so here they are separately.

The _UNSET sentinel: you were right, and the description now says the same thing. No _UNSET or _Unset in src/kiro_crew/dashboard/handlers/messaging.py, as whole words or as a module-level binding, checked against 17 module-level constants in that file as a control and 126 plain isinstance( calls for the type-test form. authored_link is two-state: the signature at messaging.py:1645 is tuple[ChannelLink, bool] | None = None and the only gate is if authored_link is not None: at :1762. The paragraph you quoted is gone from the description, which now reads "authored_link is TWO-state on the shared helper".

Worth flagging because it looks like a contradiction: a repo-wide grep for _UNSET finds three files. None is on this path. One is a request-body default for maxAge, the other two are a platform fallback sentinel and a lazily-built sandbox value, and all three carry zero references to authored_link.

The audit row: this half has moved since your review. It is emitted. src/kiro_crew/dashboard/chat_note_mirror.py:594 passes reason="no_authored_channel_link" into audit_channel_send at :589 with outcome="denied" at :593, under the guard if authored_link is None: at :571. The logger line follows that call rather than replacing it, so the refusal is filterable by reason code. The string appears twice in that module and five times in its test.

Your call was correct when you made it. At the commit the review was written against, neither the reason string nor that emitter existed; the row landed in a later round.

On the security property, since that is what the paragraph was really claiming: it holds without a third state. The refusal moved rather than being dropped. A captured None means the authoring slot had no channel binding, and the mirror refuses that at :571, upstream of the shared helper, at the only site that can produce it. That is why the helper needs no sentinel to tell "absent" from "captured None".

Use the search strings, not the line numbers. These have drifted on every push since your review, including between my last reply and this one: the guard moved 577 to 571 and the reason 600 to 594. if authored_link is None and no_authored_channel_link are each unique in that file, and has TWO states and def audit_channel_send are each unique in handlers/messaging.py.

A fabricated token returned zero across the same searches, so the zeros above are facts about the files rather than about the query.

[rnoack1]

Head sha 11132f9a1359881f0b6804553106b599feee3fe4. Nothing has changed substantively since my previous reply, so this is short: the head moved twice more and the line numbers I gave you drifted again. If you already read that one, the only new information here is the corrected coordinates.

Re-read at this head:

• No _UNSET sentinel, at module level or anywhere. _UNSET and _Unset both count zero in src/kiro_crew/dashboard/handlers/messaging.py, as whole words and as a module-level binding, against 17 module-level constants in that file as a control and 126 plain isinstance( calls for the type-test form. You were right about this.
• authored_link is two-state, not three. The signature at messaging.py:1646 is tuple[ChannelLink, bool] | None = None and the only gate is if authored_link is not None: at :1763. Line :1559 says so in as many words.
• A captured None IS refused and audited. src/kiro_crew/dashboard/chat_note_mirror.py:585 guards if authored_link is None:, and :603 passes reason="no_authored_channel_link" into audit_channel_send with outcome="denied" at :607. The logger line follows that call rather than replacing it. Twice in that module, five times in its test.
• The description paragraph you quoted is gone. THREE states, three-state, A module-level, only two may deliver and SEL-audited as each count zero in it now. It reads "authored_link is TWO-state on the shared helper".

So the mismatch you named is closed, in the direction you called: the prose came down to what the code does rather than the code growing a sentinel.

Line numbers here rot fast. The guard moved 571 to 585 and the reason 594 to 608 since my last reply, because a refactor landed above them in the same file. if authored_link is None and no_authored_channel_link are each unique in that file, and has TWO states and def audit_channel_send are each unique in handlers/messaging.py. Those four will still resolve after the next push.

A fabricated token returned zero across the same searches, so the zeros are facts about the files rather than about the query.

[rnoack1]

Both halves of this were correct at 685708b64, and both are settled at head c47d32717770a30630356a186dedd8f904205488. Verified at source, not recalled.

The _UNSET sentinel. You were right that no three-state sentinel exists, and it still does not. A whole-word grep for _UNSET and for _Unset in src/kiro_crew/dashboard/handlers/messaging.py returns zero, against controls of 8 authored_link occurrences and 17 module-level constants in that same file. The parameter is two-state by signature at src/kiro_crew/dashboard/handlers/messaging.py:1650:

authored_link: tuple[ChannelLink, bool] | None = None,

with a single gate at :1793, if authored_link is not None:. So what was stale was the prose, not the code. The paragraph you quoted has since been rewritten and now reads "authored_link is TWO-state on the shared helper", naming only the omitted and captured-link cases.

The no_authored_channel_link row. This was genuinely absent at the commit you read, and it now ships. src/kiro_crew/dashboard/chat_note_mirror.py:608 emits it:

audit_channel_send(
    session_key=session_key,
    tool_name=EGRESS_TOOL_NAME,
    channel_type=None,
    outcome="denied",
    reason="no_authored_channel_link",
)

That sits at the one site that can produce a slot with no binding at authoring time. Five assertions in test/test_note_channel_mirror.py pin it.

The net effect is the one your review was asking for. The third case is refused rather than delivered, and the refusal is audited. No sentinel is involved, because the refusal happens upstream of the shared helper rather than inside it.

[rnoack1]

Settled at head 7c3f3652138fdb2ff94429fd9996cc2db1707e36. Both of your claims were correct at 685708b64, and the paragraph has since been rewritten to the shape you asked for. Verified at source, not recalled.

The _UNSET sentinel is still absent, and the prose now says so. Whole-word greps for _UNSET and for _Unset in src/kiro_crew/dashboard/handlers/messaging.py return zero, as does isinstance(..., _Unset), against controls of 8 authored_link occurrences and 17 module-level constants in that same file. The paragraph now opens "authored_link is TWO-state on the shared helper" and states plainly that "no _UNSET exists".

The guard is named, at the site you identified. The paragraph now says the third case is "refused at the ONE site that can produce it, chat_note_mirror._deliver_via_transport (src/kiro_crew/dashboard/chat_note_mirror.py), which returns without delivering when authored_link is None". That guard sits at src/kiro_crew/dashboard/chat_note_mirror.py:587, inside _deliver_via_transport which is defined at :557. Your coordinate came from a diff view and has moved across several rebases, but the site is the one you pointed at.

The SEL row is the half that changed, rather than the prose. At 685708b64 both no_authored_channel_link and audit_channel_send had zero occurrences in that file, against a passing control of 8 authored_link hits in the sibling module, so your reading was accurate. At head the refusal emits:

audit_channel_send(
    session_key=session_key,
    tool_name=EGRESS_TOOL_NAME,
    channel_type=None,
    outcome="denied",
    reason="no_authored_channel_link",
)

at src/kiro_crew/dashboard/chat_note_mirror.py:605-611, immediately after the guard. audit_channel_send is defined at src/kiro_crew/dashboard/handlers/messaging.py:1614 and calls _sel().log_tool_invocation, so it is a filterable audit row and not a log line. Five assertions in test/test_note_channel_mirror.py pin it.

The shipped code therefore took both halves: the sentinel is gone from the shared helper, and the refusal is audited at the consumer. The paragraph also carries the point you closed on, that "a future producer that begins passing authored_link must still carry its own guard for the unbound case; the shared helper does not provide one".

[rnoack1]

Both halves of this are settled at head 796b17f74ba057e8d2c7764ce3246d99f9395751. You were right at 685708b64 on each; one was a stale paragraph and the other has since shipped. Verified at source, not recalled.

The _UNSET sentinel. Still absent, and the prose no longer claims it. Whole-word greps for _UNSET and for _Unset in src/kiro_crew/dashboard/handlers/messaging.py both return zero, as does isinstance(..., _Unset), against controls of 8 authored_link occurrences and 17 module-level constants in that same file. The paragraph you quoted now reads "authored_link is TWO-state on the shared helper" and states outright that "no _UNSET exists". The phrases it used to carry are gone: THREE states, three states, A module-level and SEL-audited as each count zero in the live description.

The no_authored_channel_link row. This was genuinely absent at the commit you read and now ships. src/kiro_crew/dashboard/chat_note_mirror.py:609 emits it:

audit_channel_send(
    session_key=session_key,
    tool_name=EGRESS_TOOL_NAME,
    channel_type=None,
    outcome="denied",
    reason="no_authored_channel_link",
)

audit_channel_send is defined at src/kiro_crew/dashboard/handlers/messaging.py:1614 and calls _sel().log_tool_invocation, so it is a filterable audit row rather than a log line. Five assertions in test/test_note_channel_mirror.py pin it.

On the point underneath the two claims, that a reader is told where the guarantee lives: the description now names the guard site rather than a mechanism. The third case is refused at src/kiro_crew/dashboard/chat_note_mirror.py:587, inside _deliver_via_transport defined at :557, which returns without delivering when authored_link is None. The paragraph names that function and adds that a future producer passing authored_link must carry its own guard, because the shared helper does not provide one.

So the sentinel stayed subtracted and the audit row came back, which is what makes the paragraph's audit sentence true rather than aspirational.

[rnoack1]

Head sha 8fc06ee95f1ad0200436b8abb6ec2b53915f65de. Your finding is settled, and this round settled it the other way round from my earlier replies, so it is worth spelling out which of your two offered remedies the code now takes.

You wrote: "Rewrite the paragraph to describe what ships ... Drop the _UNSET claim and the no_authored_channel_link SEL-audit claim. If the audit row is wanted, emit it and keep the claim." My earlier replies took the second branch: the row had been added in a round after the commit you reviewed, so I reported it as present and kept the claim. A later premise-level review asked for the row to come out, on the grounds that the snapshot returns empty coordinates unless both are present, so the branch cannot tell a never-bound session from a partially-bound one and the row named no session while filing one denial per note. That is the same paragraph you flagged, so I have taken your first branch instead.

At this head:

1. _UNSET. No sentinel, and no isinstance gate on the revalidation path. authored_link is two-state on the shared helper. The description says two-state and mentions _UNSET only to record that none exists.

2. The SEL row. no_authored_channel_link and its Slack-leg counterpart are both gone from the source tree, count zero. The refusal is still a refusal, it just returns without writing a row, which is what the sibling branch for an install with no channel surface already did. src/kiro_crew/dashboard/chat_note_mirror.py:569 is the transport guard, if authored_link is None:, inside _deliver_via_transport. src/kiro_crew/dashboard/chat_note_mirror.py:513 is the Slack leg's if not (thread_ts and channel_id):.

3. The description. The SEL-audit sentence is replaced by one stating the refusal is silent and why. Two other stale claims went with it in the same edit: a per-site marker mechanism that no hunk in the diff adds, and a paragraph calling the shared per-chunk driver deferred when the diff ships it as send_parts_revalidating in kiro_crew/messaging/renderer.py.

Three tests that pinned the rows now pin their absence plus the refusal itself, so a row coming back is a failure rather than a silent change. Full suite for the touched modules is green at 792.

One item from your review is not mine to close. The tracking issue the RFC front matter wants is a maintainer action, and filing it notifies the watchers, so I have left tracking-issues empty rather than filing one.

[rnoack1]

Head sha 404404726370d49438d7297711a263a7b3cf566a. Both halves of your finding still hold here, re-checked by search string rather than line number since the lines have moved twice since my last reply.

1. The _UNSET sentinel. Zero occurrences of _UNSET or _Unset in src/kiro_crew/dashboard/handlers/messaging.py. The module-level note there says authored_link has TWO states and records that no sentinel exists, which is the shape you asked for.

2. The SEL row. Zero occurrences of no_authored_channel_link anywhere in the source tree, and zero of its Slack-leg counterpart. The refusal is still a refusal and returns silently: src/kiro_crew/dashboard/chat_note_mirror.py carries the guard if authored_link is None: at the one consumer that can produce that case. The description no longer claims an audit row for it.

One thing worth flagging because it came out of your own audit comment on this PR. You noted two remaining references to the symbol the change deletes. Both were in test/test_note_channel_mirror.py, filtering recorded rows for the string no_authored_channel_link. Since nothing in the source can emit that string any more, neither assertion could fail, so they were guarding nothing. They now assert on any denied row instead. I proved the difference by re-adding a denial row under a different reason: the new form fails, the old form would have passed. That is the last surface carrying the deleted name, so the count is zero across source, tests and docs.

Suite for the touched modules is green at 806.

Two items on this PR are not mine to close and I have not acted on them: the maintainer sign-off requested in the description for the send_message rider, and the RFC's empty tracking-issues field, since filing an issue notifies the watchers.

[rnoack1]

Head sha 7f139f2c2eee26be72c9c33dfefb5b9560559710. This is settled at that head, and you were right at the commit you reviewed: the subtraction had landed in the code while the paragraph still described the pre-subtraction design.

Every coordinate you named, measured at the current head:

• No module-level _UNSET or _Unset sentinel in src/kiro_crew/dashboard/handlers/messaging.py. Count is 0. As a control that the read is real, the same file has 17 module-level constant assignments and 126 isinstance( calls, so the query does find what is there.
• No isinstance(..., _Unset) gate anywhere in that file. Count is 0 against those 126 isinstance( calls. The three lines you cited now hold unrelated code: :1471 is if governed is None:, :1521 is the channel_delivery_failed return, :1624 is a docstring line.
• No emitter of no_authored_channel_link in src/, test/ or docs/. All three are 0, against a control that finds a reason code which is emitted. Its Slack-leg counterpart no_authored_slack_thread is gone too.
• The refusal is the caller-side guard you described, on a plain None. At this head it sits at src/kiro_crew/dashboard/chat_note_mirror.py:569, if authored_link is None:, inside async def _deliver_via_transport. Your citation of :326 was correct for the commit you read; the line moved in the shas since, and :326 is now a timeout=budget keyword argument.

The paragraph was rewritten to match. It now opens "authored_link is TWO-state on the shared helper", names chat_note_mirror._deliver_via_transport as the one consumer that can produce the third case, and says it "returns without delivering when authored_link is None". The _UNSET claim is gone as a claim: the only surviving mention states the absence, "keeps the shared helper free of a sentinel, so no _UNSET exists". The SEL-audit claim is gone as well, and the paragraph now records why, that the refusal returns silently because the snapshot cannot distinguish a never-bound session from a partially-bound one, so the row carried no per-session fact.

So both halves of your required change are in, and the code took the drop branch rather than the re-add branch you offered as the alternative.

[rnoack1]

Head sha 5f78068e2b4f52e27635daf4090ac048abecdb84. This is settled at that head, and you were right at the commit you reviewed: the subtraction had landed in the code while the paragraph still described the pre-subtraction design.

Your four code claims, each measured at this head with a control so a zero means something:

• No _UNSET or _Unset in src/kiro_crew/dashboard/handlers/messaging.py, at module level or anywhere else in the file. Count is 0, against 17 module-level constant assignments in that same file.
• No isinstance(..., _Unset) gate in it either. Count is 0, against 126 isinstance( calls in that file. The three lines you cited now read if governed is None: at :1471, the channel_delivery_failed return at :1521, and a docstring line at :1624.
• No emitter of no_authored_channel_link in src/, test/ or docs/. All three are 0, against a control that finds a reason code which is emitted. Its Slack-leg counterpart no_authored_slack_thread is gone too.
• The refusal is the caller-side guard on a plain None that you described. One correction to the coordinate: at this head it sits at src/kiro_crew/dashboard/chat_note_mirror.py:569, not :326. The line moved as the branch rebased forward; :326 is now a timeout=budget keyword argument. The guard reads if authored_link is None: and its enclosing function is async def _deliver_via_transport, which is the one consumer you named.

The paragraph was rewritten to match. It now opens "authored_link is TWO-state on the shared helper", names chat_note_mirror._deliver_via_transport as the single site that can produce the third case, and says it returns without delivering when authored_link is None. Both retracted claims are gone as claims: no_authored_channel_link does not appear in the description at all, and the one surviving _UNSET mention states its absence, "keeps the shared helper free of a sentinel, so no _UNSET exists". The paragraph also now records why the row went rather than leaving it unexplained: the refusal returns silently because the snapshot cannot distinguish a never-bound session from a partially-bound one, so the row carried no per-session fact.

So the code took the drop branch rather than the emit-the-row alternative you offered, and the prose now describes that.

I also swept the other surfaces for the retracted claims so two contradicting statements do not survive: the commit message body carries none of them, the module spec carries neither the sentinel claim nor the row name, and this change adds zero lines mentioning either token anywhere in the diff.

[rnoack1]

Head sha 25dcee4ddc8086a82da2a3e47019fd1c9c49b9d2. Every element of your required change is in at this head, and the two earlier statements on this thread were each true when written. Here is the reconciliation, measured at this head rather than recalled.

Your four code observations, each with a control so a zero means something:

• No _UNSET or _Unset in src/kiro_crew/dashboard/handlers/messaging.py, at module level or anywhere else in the file. Count is 0, and this change adds 0 lines mentioning either token, against 17 module-level constant assignments in that same file and 14 lines the change does add for an unrelated parameter.
• No isinstance(..., _Unset) gate on the revalidation path. Count is 0, against 126 isinstance( calls in that file. The three lines you cited now read if governed is None: at :1471, the channel_delivery_failed return at :1521, and a docstring line at :1624.
• No SEL row named no_authored_channel_link in src/, test/ or docs/. All three are 0, against a control that finds a reason code which is emitted.
• The refusal is the caller-side guard on a plain None that you described, at its one consumer. One correction to the coordinate: at this head it sits at src/kiro_crew/dashboard/chat_note_mirror.py:569, not :326. It reads if authored_link is None: and its enclosing function is async def _deliver_via_transport. Line :326 is now a timeout=budget keyword argument, and :552 is a docstring paragraph about a pause-skip intent.

On the row, because the thread now carries two answers that look contradictory and are not. You were right originally. The reply saying the row IS emitted at chat_note_mirror.py:552 was also right at the sha it named: the row existed there with reason="no_authored_channel_link". It was then removed again in a later round, and from that round through this head the count is 0. So your original observation holds again for the shipped code, and nothing about the earlier reply was mistaken at the time.

The paragraph now matches. It opens "authored_link is TWO-state on the shared helper", names chat_note_mirror._deliver_via_transport as the single site that can produce the third case, and says it returns without delivering when authored_link is None. Both retracted claims are gone as claims: no_authored_channel_link does not appear in the description at all, and the one surviving _UNSET mention states its absence, "keeps the shared helper free of a sentinel, so no _UNSET exists". The paragraph also records why the row went rather than leaving it unexplained, which was your Risk point: the refusal returns silently because the snapshot cannot distinguish a never-bound session from a partially-bound one, so the row carried no per-session fact. And it names where the guard lives, which you noted the prose never did.

So the code took the drop branch rather than the emit-the-row alternative you offered, and the prose describes that branch. I also swept the other surfaces so no contradicting copy survives: the commit message body carries none of the retracted tokens, and the module spec carries neither the sentinel claim nor the row name.

[rnoack1]

Re-confirming at head e1870a18365ad060e9234358fbaae40fe63cd366, since the head has moved twice since the detailed reply above. All four of your code observations still hold, each measured against a control rather than recalled:

• _UNSET / _Unset in src/kiro_crew/dashboard/handlers/messaging.py: 0, against 17 module-level constants in that same file.
• no_authored_channel_link: 0 in src/, test/ and docs/, against a control that does find a reason code which is emitted.
• The caller-side guard you described is present at src/kiro_crew/dashboard/chat_note_mirror.py:569, reading if authored_link is None: inside async def _deliver_via_transport.
• The description paragraph opens "authored_link is TWO-state on the shared helper", carries no three-state claim, and names neither retracted token as a claim.

Nothing about those four items changed between that reply and this head, so this adds no new evidence, only the current sha. The intervening work was elsewhere: the send-adjacent staleness guard now compares the composite governance answer (ceiling intersected with profile) rather than the ceiling counter alone, plus an import-order fix and a test correction.

[rnoack1]

Thanks — you were right when you wrote this, and on all three counts. The code had adopted the subtraction and the Description had not been reconciled to it. The prose has since been rewritten; each item below is verified at head b646f32b06916afcf7a196ede23cb74c0f3a202b.

The sentinel. There is no _UNSET and no _Unset in src/kiro_crew/dashboard/handlers/messaging.py, at module level or anywhere else — zero occurrences — and no isinstance(..., _Unset) gate at any of the three lines you cited or elsewhere in the tree. authored_link is declared tuple[ChannelLink, bool] | None = None at messaging.py:1666 and read through a single if authored_link is not None: at messaging.py:1815. The comment block at messaging.py:1565-1570 states the two states directly. The Description now says "TWO-state" and "no _UNSET exists" rather than describing three states.

The SEL row. no_authored_channel_link does not appear anywhere in the repository — zero occurrences, not only in the emitter. The refusal is silent: chat_note_mirror.py:569 returns after a logger.info, with no audit call, and the Description says so ("returns SILENTLY") and records why the earlier audited version was dropped — the snapshot cannot tell a never-bound session from a partly-bound one, so the row carried no per-session fact while filing one denial per note for every unbound session.

Where the third case is handled. The captured-None case is refused at the only site that can produce it, _deliver_via_transport in src/kiro_crew/dashboard/chat_note_mirror.py (function at :539, the guard at :569), which is what the Description names. The placement is load-bearing rather than incidental: the shared helper's walk runs when the task runs, so passing an unbound slot through would let it read a binding created after authoring and treat that as the authorized destination.

Two things worth flagging since they are adjacent to what you read. audit_channel_send is module-level at messaging.py:1620 — deliberately, because a second site refuses on this leg and a hand-written second copy is how a denial stream comes to look complete with one branch missing. And the mid-send revalidation is unconditional (messaging.py:1760, three call sites): authored_link opts into the authored-link comparison only, not into revalidation.

No code changed for this reply and the head sha is unchanged — the Description was the stale half, and it was the Description that was corrected.

[rnoack1]

You were right, and on all three counts. The code had adopted the First Principles subtraction and the Description had not been reconciled to it. That paragraph now describes what ships; verified at head 5a4e908c521cca91ddd77bae66573640f3cd931e.

The sentinel. There is no _UNSET and no _Unset in src/kiro_crew/dashboard/handlers/messaging.py, at module level or anywhere else — zero occurrences — and no isinstance(..., _Unset) gate at any of the three lines you cited or anywhere in the tree. authored_link is declared tuple[ChannelLink, bool] | None = None and read through a single if authored_link is not None: at messaging.py:1817. The Description now says two-state and states the sentinel's absence rather than describing three states.

The refusal is caller-side, as you read it. The guard is if authored_link is None: at src/kiro_crew/dashboard/chat_note_mirror.py:569, inside _deliver_via_transport (function at :539), which returns without delivering. Your line reference pointed a little earlier in the file, but the shape is exactly what you described and the Description now names that function and that guard.

The SEL row — one correction worth flagging, because it moved after your review. no_authored_channel_link does not exist anywhere in the repository, so that specific claim was as wrong as you said and is gone. But the refusal is no longer silent either: an automated review lane raised the unaudited refusal as a blocking finding, on the grounds that it was the only denial on this leg leaving no SEL record while turning on a binding's arrival time. It now files a denied audit_channel_send row under the reason code unbound_at_authoring — with one deliberate exemption, the install that has no channel transports at all, which stays silent because there the refusal is about the install rather than the request and a row would fire for every note on every session while naming no destination. Both halves are pinned by tests that differ only in whether a transport is registered.

So the paragraph you flagged now claims: two states, no sentinel, the caller-side guard at its single consumer, and an audited refusal with the no-transport exemption named. If you would rather the audit row not be there at all, that is a genuine disagreement between two reviewers rather than something I should settle quietly — say so and I will take it back to the maintainer instead of choosing between you.

[rnoack1]

Verified at head 58a14cffe62b2c80303f4c64247151231f8ab04f. The description and the code agree; I read each clause of the paragraph you flagged against source rather than re-fixing it.

The SEL audit row exists. dashboard/chat_note_mirror.py:578-584 files audit_channel_send(session_key=…, tool_name=…, channel_type=None, outcome="denied", reason="unbound_at_authoring"). Two occurrences repo-wide: that emit site, and dashboard/handlers/messaging.py:1632 documenting that both endings stream through the same module-level emitter. The exemption the paragraph describes is at dashboard/chat_note_mirror.py:572, and it is placed before the audit so an install with no channel transports stays silent.

There is no three-state sentinel, and the description does not claim one. It states the shared helper is two-state and that no _UNSET sentinel exists. The guard it names is live at dashboard/chat_note_mirror.py:569 — if authored_link is None: — returning without delivering, with the reason recorded in the comment at :567-568. This change adds no _UNSET: the count is identical at this head and at the base commit (three, all in dashboard/chat_handlers.py, a pre-existing maxAge default at :9501, unrelated to authored_link). no_authored_channel_link has zero occurrences in the code and zero in the description. Positive controls for the same searches: authored_link 11, audit_channel_send 9.

What did change since you reviewed, in case it is what you were looking at: the mid-send retraction and the config-generation/stat-fingerprint bracket were both removed on review feedback, and with them three audit reason codes. The unused sending_basis cell went at this head. unbound_at_authoring was not among them — it is the one row on this leg that survived, because refusing on a binding's arrival time is a permission decision on an install that has a deliverable surface.

Happy to re-check anything else you spot at this head.

[rnoack1]

Verified at head d87af6e07f1a235c8ad40f257c1a84801d43d734. Your required change is in, and the optional half you offered was taken too.

The prose now describes what ships. authored_link is documented as TWO-state, and the paragraph names the guard where it actually lives — chat_note_mirror._deliver_via_transport, whose if authored_link is None: sits at dashboard/chat_note_mirror.py:569 and returns without delivering. The "THREE states" framing is gone (0 occurrences), and so is the no_authored_channel_link claim (0 in the description, 0 in the code). The one remaining _UNSET string in the description is the sentence stating there is none.

The code matches. _UNSET, _Unset and no_authored_channel_link are all 0 across the two files you cited. Positive controls for the same searches, so the zeros are not a broken query: authored_link 14, audit_channel_send 9.

On the audit trail specifically — you wrote that if the row is wanted, emit it and keep the claim. That is the branch taken: the refusal now files a denied audit_channel_send row under the reason code unbound_at_authoring at dashboard/chat_note_mirror.py:578-584, so the security-boundary refusal you flagged as observable only in a log line is now a filterable SEL row. The no-transport install stays silent, deliberately, and the guard sits before the audit so an install with no channel surface does not emit a row per note. Your risk paragraph was the reason that row exists.

Two things have moved since you reviewed, both worth naming so the diff is not a surprise: a mid-send retraction and a config-generation/stat-fingerprint bracket were removed on review feedback, and the shared helper's continuation re-ask is now unconditional rather than gated — the module's own comment promised that and the code was withholding it.

Happy to re-check anything else you spot at this head.

[rnoack1]

Verified at head 84441731320ac44bd1af30b849449a580e7c5277. Every item in your review is resolved, and the optional branch you offered was taken. Your finding was correct when you wrote it — at the commit you reviewed, 685708b64, no_authored_channel_link, unbound_at_authoring and audit_channel_send were all 0, so the description really did assert an audit trail the code did not have. The row landed in a later round, not before your review.

The paragraph now describes what ships. It opens `authored_link` is TWO-state on the shared helper and names the guard where it actually lives: chat_note_mirror._deliver_via_transport, whose if authored_link is None: sits at dashboard/chat_note_mirror.py:569 (the function is defined at :539) and returns without delivering. The "THREE states" framing is gone (0 occurrences), and so is the no_authored_channel_link claim (0 in the description and 0 in the code). The one remaining _UNSET string in the description is the clause stating there is no such sentinel.

The code matches, scoped the way you scoped it. _UNSET and _Unset are both 0 in dashboard/handlers/messaging.py — the module you named — and 0 in dashboard/chat_note_mirror.py. Worth stating precisely rather than as a repo-wide zero: _UNSET does appear 46 times elsewhere in the tree, all in unrelated modules, and this change adds none of them (0 added lines containing it). The one such file this change happens to touch carries 3 occurrences at both the base commit and at head, so they are pre-existing and untouched. Positive controls for the same searches, so the zeros are a fact about the tree rather than about my query: authored_link 27, audit_channel_send 9, unbound_at_authoring 4, _deliver_via_transport 10.

On the audit trail specifically — you wrote that if the row is wanted, emit it and keep the claim. That is the branch taken, so the refusal is now observable in the audit log rather than only in a log line: dashboard/chat_note_mirror.py:578-584 files audit_channel_send(..., outcome="denied", reason="unbound_at_authoring"). The no-transport install stays silent, deliberately, and that branch sits at :572-573 — before the audit — so an install with no channel surface does not emit a row per note. Your risk paragraph is the reason that row exists at all.

Two things have moved since you reviewed, both worth naming so the diff is not a surprise. The shared helper's revalidation is now unconditional rather than gated on authored_link, so the inline send path also refuses on a superseded governance ceiling, on a binding that changed during its resolve, and between parts once a destination is revoked. And the consolidation write-up was cut back to its inventory: a speculative multi-step plan was removed, leaving the tier map and the symbol-named deferred list that the census test and the messaging spec actually lean on.

Happy to re-check anything else you spot at this head.

[rnoack1]

Head sha fe10f011dbdc735ccfd1f9e16756b0a5832d7370. Your finding was correct when you wrote it, and both halves are settled at this head — the code stayed two-state and the description is what moved.

1. The sentinel and the SEL row are absent from the code, as you said. In src/kiro_crew/dashboard/handlers/messaging.py: zero whole-word occurrences of _UNSET or _Unset, zero isinstance(..., _Unset) gates, and no_authored_channel_link is zero across the whole tree. Positive control on the same query in that module: authored_link appears 6 times, so the zero is a fact about the tokens rather than about my search. The three lines you cited have moved since your review — :1471, :1521 and :1624 now hold a ChannelLink construction, a logger.warning, and a parameter declaration respectively — so I checked by token rather than by line.

2. The description no longer claims three states. It now states the two-state design explicitly and says in as many words that there is no _UNSET sentinel. The module-level contract note is at messaging.py:1565: authored_link has TWO states — omitted (an inline caller) or a captured link.

3. Where the third case actually goes. The state your finding was about — a slot with no binding when the work was authored — is refused at the single site that can produce it, chat_note_mirror._deliver_via_transport: the guard is at chat_note_mirror.py:583, and it files a denied egress audit row under the reason unbound_at_authoring at :597. So the case is handled and audited; it is just not a sentinel on the shared helper, which is why the prose describing one was wrong rather than the code.

I swept the other surfaces for the same claim so a corrected description does not leave a stale copy standing: the commit body carries it zero times, and of the two docs files this change touches, the only "three-state" hit is messaging/upload_gate.py's privacy-mode ladder, which is an unrelated subject.

[rnoack1]

Verified both halves of this at head 1c40ca2fcb358fbc599baeea3e618bf7fbcf5c76, and you were right on the code — on both counts, and you were right when you wrote it.

The _UNSET sentinel does not exist. src/kiro_crew/dashboard/handlers/messaging.py carries zero occurrences of _UNSET or _Unset, and no isinstance(..., _Unset) gate anywhere. I checked that by token rather than by your line numbers, which have drifted a long way since your review. The parameter is declared two-state at messaging.py:1668 — authored_link: tuple[ChannelLink, bool] | None = None — and unpacked once at messaging.py:1798 under if authored_link is not None:. Nothing represents a third state.

One thing worth recording so a later reader does not trip on it: a repo-wide grep for _UNSET returns 37 hits, which looks like a contradiction and is not one. They are unrelated pre-existing sentinels — sandbox.py, platform/context.py, stt/vad.py, and a maxAge default in chat_handlers.py:9651 — and none of the files holding them mentions authored_link at all. This change's own added lines introduce zero of them.

The no_authored_channel_link SEL row does not exist either. Zero occurrences tree-wide, against a positive control of nine audit_channel_send call sites, so the query is sighted. The refusal you identified is where you said it is: chat_note_mirror.py:584 guards if authored_link is None: at the single consumer. What it files is a denied audit_channel_send row under the reason code unbound_at_authoring, at chat_note_mirror.py:598 — a real SEL row, but not the name the prose had claimed.

The description was the defect, and it is corrected at this head. It now states authored_link is TWO-state on the shared helper, explicitly says "There is no _UNSET sentinel", names chat_note_mirror._deliver_via_transport as the one site that refuses the unbound case, and names the row that is actually emitted as unbound_at_authoring. It makes no mention of no_authored_channel_link. So the mismatch you filed is gone, and it is gone because the prose was brought to the code rather than because your reading was off.

Two boundaries in that paragraph are deliberate and I would rather state them than leave them implied. The no-transport install stays silent, because there the refusal is about the install rather than the request and a row would fire for every note on every session while naming no destination. And a future producer that begins passing authored_link must carry its own guard for the unbound case: the shared helper is two-state and does not provide one.

[rnoack1]

Thanks — this was accurate when you wrote it, and both halves of it have since been addressed. Verified at head 3beea08a76, with the reads that settle each item.

Your reading of the code was right. At head there is still no _UNSET/_Unset sentinel in src/kiro_crew/dashboard/handlers/messaging.py (0 occurrences; positive control: authored_link appears 6 times in that module), and no isinstance(..., _Unset) gate anywhere in the tree. authored_link is two-state, exactly as you described. The one _UNSET in a file this change touches is unrelated and pre-existing — chat_handlers.py:9652, a sentinel for an optional maxAge request-body field; that file contains no authored_link at all and this change modifies none of its _UNSET lines.

The missing audit trail is the part that changed. You were right that the refusal only logged. It now files a row first: chat_note_mirror.py:680-686 calls audit_channel_send(session_key=..., tool_name=EGRESS_TOOL_NAME, channel_type=None, outcome="denied", reason="unbound_at_authoring"), and the log line follows at :687. So the refusal is filterable in the audit stream, under the reason code unbound_at_authoring rather than the name the prose used to claim; no_authored_channel_link appears in 0 files. Two branches stay deliberately silent and say why in-line: an install with no channel transports (:670), because it would fire for every note on every session while naming no destination, and a Slack-only binding (:674), because that leg delivered and nothing was refused.

The guard is where you said it should be. if authored_link is None: at chat_note_mirror.py:667, inside _deliver_via_transport (:637). authored_link= is passed at exactly one site, :717, so the shared helper stays two-state and needs no sentinel to tell "absent" from "captured None".

The paragraph has been rewritten to match, taking your second option. It now opens authored_link is TWO-state on the shared helper, states plainly that there is no _UNSET sentinel, names chat_note_mirror._deliver_via_transport and its if authored_link is None: guard as where the third case is refused, and names the unbound_at_authoring row with the no-transport exemption. Your risk note about the next producer is answered explicitly in the same paragraph: a future producer that begins passing authored_link must carry its own guard for the unbound case, because the shared helper does not provide one.

Since you noted that re-adding the row re-adds part of what the subtraction removed: what came back is one call to an existing module-level emitter at a single site, not the sentinel or the three-state branch. The emitter is module-level for the reason you would expect — a second refusal site on this leg with a hand-written copy is how a denial stream comes to look complete with one branch missing.

[bolichen97]

@rnoack1 This PR and #7163 change the same held-note pipeline from opposite ends, and that is the overlap to settle first.

Shared files: src/kiro_crew/dashboard/slot_buffers.py and src/kiro_crew/dashboard/chat_handlers.py. This PR adds a zero-argument mirror callable to every _deferred_notes entry and invokes it inside SlotBufferCoordinator.flush_deferred_notes right after the write is counted, and its api_chat_slot_note docstring declares the record shape as exactly id, content, cls, context, session, mirror. #7163 changes that same function's signature to flush_deferred_notes(..., *, markers_only: bool) on both SlotBufferCoordinator and _ChatSlot, with no default, adds a second element class to the same list (section_marker rows carrying role/meta and a None context), adds a _MAX_DEFERRED_NOTES capacity refusal, and rewrites every call site to pass markers_only=, including a new one at True.

Two consequences. The reason given here for carrying the dispatch on the record, that the no-argument spelling is asserted by tests outside this change, stops holding once #7163 lands. And the exhaustive record-shape paragraph is wrong in either merge order.

#7163 is the further-along side of this seam, since it owns the signature and the list's element classes. Suggestion: land #7163 first, then rebase this PR onto it, restate the docstring to cover both element classes, and make the mirror dispatch skip a markers_only=True flush, because a marker is not a note and a channel has no transcript surface. It is not a crash risk today: a marker row has no mirror key, so note.get("mirror") is None.

Both PRs are yours, so one ordering decision settles this. The audit read this PR at 2830b8e; the head has since moved to dcfca06, and both shared files are still in the diff.

Posted from the 2026-09-08 open-PR relationship audit (read-only, one auditor per PR); reply here if any of this is wrong.