client-reliability-3: close verified landed lifecycle fix and record dispatch handoff

docs/TODO.md

@@ -18,3 +18,5 @@
 - 2026-10-19: client-reliability-3 implemented at current worktree: actual five-card obsolete starts1→0 after last-owner disposal; shared queued/live owners and active probe cache preserved; inflight identity and stale registration guards. Focused25/25 across4 files,11 mutants rejected, lint11/11, build/artifact verification pass, native Chromium/Firefox built-dist lifecycle smoke pass with0 external requests/page errors. Remaining: committed merged-tree full426-file gate, normal landq, durable ancestry/close and dispatch events. Active abort, URL probes, actual media fallback/peers and CPU/RSS unverified/out of scope; entire Stage3 performance plan is not complete.
 
 - 2026-10-19: client-reliability-3 ready for normal queue at607d5ce1: full426/426 files exit0 with60s/file bound;27 focused scenarios,14 reverted mutants rejected, lint11/11, build/artifact verification pass. Corrected Chromium/Firefox built-dist/native-observer smoke:0 obsolete starts/stale callbacks/page errors/external requests; hidden reveal and source-health visibility pass. Remaining: normal queue/durable landing/ancestry then close and dispatch landing/final evidence events. Actual playback fallback/live peers, active abort/URL cancellation, CPU/RSS and full Stage3 remain unverified/out of scope.
+
+- 2026-10-19: client-reliability-3 finished and closed after verified normal landing7d20a509 (submissione522efc1, gate exit0, unstable ancestry exit0). Full426/426 files,focused27/27,14 reverted mutants,lint11/11,build/artifact verification and native Chromium/Firefox controlled-IO smokes pass; obsolete starts1→0. Dispatch landing evidence sent; closure metadata/final report follow. Dispatch owns preview sync/rebuild after its resume; mailbox does not wake idle sessions. Actual media fallback/live peers/CPU-RSS, active abort/URL cancellation and whole Stage3 remain outside qualification; no new work without routing.

docs/agents/backlog/client-reliability-3.json

@@ -1,9 +1,10 @@
 {
  "id": "client-reliability-3",
  "area": "client-reliability",
- "status": "in-progress",
+ "status": "done",
  "title": "Cancel queued torrent health probes when their last feed owner is disposed",
  "blockedOn": null,
  "addedOn": "2026-10-19",
- "filedAt": "f9adfc8f531bcb77d4dc6e5487f76dbce0916167"
+ "filedAt": "f9adfc8f531bcb77d4dc6e5487f76dbce0916167",
+ "closedOn": "2026-10-19"
 }