docs: record client-reliability-5 merged-tree validation and slot timing

docs/TODO.md

@@ -25,6 +25,8 @@
 
 ## client-reliability
 
+- 2026-10-20: item5 ready atmergedf2a392fa(product12f92732):full427/427 files60s-bound exit0,focused28/lifecycle18,six reverted mutants,lint11/build-artifact/native Chromium+Firefox smoke pass;obsolete mirror HEAD1→0,shared/rejoin/retry/hidden reveal pass,0 external/pageerrors. Full-slot wait10m57s recorded;browser released,expensive slot held through normal landing. Remaining queue/durable ancestry/close;active abort/real playback/CPU unverified.
+
 - 2026-10-20: item5 routed controller-only pre-candidate guard implemented; baseline16pass/2fail→fixed18/18 lifecycle,6 rejected/reverted mutants,focused28/4files,lint11/build+artifact pass. No full/browser launch while dispatch administrative drain/QA reservation holds; slot requested13:32:54UTC,await explicit grant and verified unstable merge. No active abort/observer/cache/limits change; actual fallback/CPU unverified. Unique integrity/evidence in test_logs/*client-reliability-5*.
 
 - 2026-10-20: item5 investigation at0c1dd7e8:active URL success/real4000ms controlled timeout release media/slot correctly;disposed active primary media error starts1 obsolete mirror HEAD(expected0),strict assertion naturally exits1 after cleanup/retry. Shared/rejoin owner and later same-source controls pass. Proposed controller-only pre-candidate ownership guard + focused tests; await dispatch routing. No product/tests changed; active abort/browser/fallback/CPU unverified. See test_logs/TEST_LOG_2026-10-20_13-30-00_client-reliability-5.md.

docs/agents/backlog/client-reliability-5.json

@@ -6,5 +6,5 @@
   "blockedOn": null,
   "addedOn": "2026-10-20",
   "filedAt": "3f627f5df3da7bcd28d910d9f8161844fa77ff74",
-  "evidence": "At0c1dd7e8 active media error after last-owner disposal starts1 new mirror HEAD(expected0);strict diagnostic exits1 after cleanup. Success/4000ms controlled timeout/shared/rejoin/retry controls pass. Evidence test_logs/TEST_LOG_2026-10-20_13-30-00_client-reliability-5.md. Investigation only; awaiting controller pre-candidate guard routing."
+  "evidence": "Controller guard12f92732,mergedf2a392fa:full427/427files,focused28/lifecycle18,six reverted mutants,lint11/build/browser pass;obsolete mirrorHEAD1\u21920. Slot wait10m57s respected. Normal product queue/durable ancestry pending. See test_logs/TEST_LOG_2026-10-20_13-51-00_client-reliability-5-ready.md"
 }

test_logs/TEST_LOG_2026-10-20_13-51-00_client-reliability-5-ready.md

@@ -0,0 +1,11 @@
+# Item5 ready on merged f2a392fa3b969a66cdaca2ee5e8877c72658bcdf
+
+- Product12f927321fdd0a945f3bdcfb3a618ef16b54ff7c; non-destructive merge of verified unstableb922c186 printedf2a392fa. Tree clean through checks; product/controller diff remains6lines.
+- Resource request13:32:54UTC; dispatch explicit exclusive full→browser→product-landing grant13:43:51.426UTC:10m57s waiting. Merge completed13:44:06,check-start event13:44:28. Full pass/browser-start event13:50:44,browser done by13:50:49. No full/browser launched before grant. Initial pickup13:27:49; approval-review deadline stall is tooling, not product failure/rejection (see precommit note).
+- `env -u NODE_TEST_CONTEXT UNIT_TEST_TIMEOUT_MS=60000 npm test`: natural exit0,427/427 files,0 quarantined; log `/tmp/item5-full-merged.log`. No aggregate scenario count exposed by runner.
+- `env -u NODE_TEST_CONTEXT npm run lint` with approved git subprocess access: exit0,11stages (`/tmp/item5-lint-merged.log`).
+- `env -u NODE_TEST_CONTEXT npm run build`: exit0 including artifact verification (`/tmp/item5-build-merged.log`).
+- Relevant focused4files/28scenarios pass,including18 lifecycle; six new scenarios baseline16pass/2fail→fixed18pass/0fail/0cancelled; six restored mutants naturally exit1 with named failures/0cancelled. Unique integrity note `test_logs/TEST_INTEGRITY_client-reliability-5.md`.
+- `env -u NODE_TEST_CONTEXT node /tmp/item5-browser.mjs` with approved private loopback/browser access: exit0, Chromium+Firefox built-dist/native IntersectionObserver, external media/fetch IO virtualized. Each obsolete mirror HEAD0 vs baseline1; cancelled result null/no cache/old connected badge checking; later same-source retry healthy; shared/rejoin controls each one ordered mirror with live healthy/old checking and resource/slot0; hidden reveal works; external requests0/pageerrors0. Browser cache is a twin, unit uses actual cache module. Owned server/browser closed and preview3000 untouched.
+- Browser released after smoke,exclusive expensive slot retained through normal product landing as granted. Next normal CLI submit clears NODE_TEST_CONTEXT without changing gate/runner/assertions; durable landing/unstable ancestry/close/final events remain.
+- Out of scope/unverified: active HEAD/media/HLS/torrent abort, actual media decoding/playback fallback/live peers,CPU-RSS/full Stage3,production/signers/wallet/deploy.

todo/TODO_2026-10-20_13-51-00_client-reliability-5-ready.md

@@ -0,0 +1,7 @@
+# Item5
+
+- [x] Controller pre-candidate guard,six new regressions/six restored mutants.
+- [x] Focused28,lifecycle18,full427files,lint11,build/artifact,native Chromium+Firefox controlled smoke.
+- [x] Respect/measured full/browser wait10m57s;browser released.
+- [ ] Normal clean-env product queue,durable landed status/unstable ancestry.
+- [ ] Close metadata,dispatch landing/final/slot-release.