docs: plan MCP source reconciliation

.claude/skills/to-acceptance-plan/scripts/check-acceptance-plan-test.sh

@@ -113,6 +113,13 @@ sed_in_place 's/\*\*Expected tasks:\*\* deferred to orchestration/\*\*Expected t
 sed_in_place 's|<!-- combined rationale fixture placeholder -->|**Combined rationale:** The fixture is one indivisible documentation check, so separate plan review adds no value.|' "$combined_valid"
 bash "$checker" "$combined_valid" >/dev/null
 
+# Category extraction must survive an interface block larger than a pipe buffer.
+for source in "$valid" "$combined_valid"; do
+  large="$root/acceptance/large-$(basename "$source")"
+  awk '/^### Scenario/ { for (i = 0; i < 4096; i++) print "Additional interface detail for the large-block fixture." } { print }' "$source" >"$large"
+  bash "$checker" "$large" >/dev/null
+done
+
 for case_name in missing-contract invalid-contract missing-category bare-none placeholder bad-delivery bad-status proposed-unchecked missing-human placeholder-human checked-without-decision; do
   cp "$valid" "$root/acceptance/$case_name.md"
 done

docs/acceptance/README.md

@@ -155,6 +155,7 @@ PR after verification. There is no cleanup or status-only PR.
   attributable Linux and macOS command/job temporary storage with a permission-visible
   system escape and deterministic crash-residue reaping. Status: landed.
 - [Session title generation and token usage](session-title-generation.md) — mecatui `/title`, an opt-in routed model title after up to three genuine prompts, and durable title-model token attribution. Status: draft.
+- [MCP source reconciliation](mcp-source-reconciliation.md) — bounded ToolHive polling, MCP notifications, and manual refresh publish immutable direct MCP runtimes while preserving exact-name authority; explicit owner refresh unions additions. Status: proposed.
 - [Mecatui-owned configurable terminal titles](mecatui-terminal-title-controller.md) — replaces Bubble Tea title emission with a renderer-serialized OSC 0 controller, user-global plain-text title templates over display-safe status facts, explicit disablement precedence, and live-run `/session` identity access. Status: proposed.
 - [Per-upstream MCP broker OAuth grants](mcp-broker-multi-upstream-oauth.md) — accept multiple broker OAuth upstreams while keeping grants, callback state, authenticated discovery, and workspace-enrollment progression backend-scoped. Status: draft.
 - [Broker MCP status](broker-mcp-status.md) — approved owner-scoped broker connector