land: area/client-reliability 4f1d954872 (client-reliability)

context/CONTEXT_2026-10-22_20-48-00_client-reliability-9.md

@@ -0,0 +1 @@
+Client9 HEAD-only fix durably landed f41ac656 after normal435-filegate exit0, ancestry0; sequential build/artifact exit0. Heavy slot released. Await separate bounded native browser slot; no browser started. HLS/torrent/RangeGET and wholeStage3 remain open. No additional product changes.

context/CONTEXT_2026-10-22_20-52-00_client-reliability-9.md

@@ -0,0 +1 @@
+HEAD slice complete locally: durablef41ac656 normal435unique/exit0/ancestry0; build/artifact0; controlled native Chromium+Firefox lifecycle pass with synthetic media completion/public-deny. Browser/heavy resources released. Pending docs-only evidence landing; HLS/torrent/RangeGET remain open, await bounded routing/HEAD closure disposition.

docs/agents/backlog/client-reliability-9.json

@@ -7,5 +7,5 @@
   "addedOn": "2026-10-22",
   "filedAt": "fb54cea3a2ba99b4860421724a5050af6b97c293",
   "brief": "docs/agents/CAMPAIGN-2026-10-22.md",
-  "evidence": "HEAD-only candidate e9c960ed merged e887ceaf;60focused/4files (new23+existing29+4+4),16isolated mutants naturally exit1/0cancelled,lint11 hostexit0. Strict scope extension note;no existing tests changed. Merge from current unstable docs/evidence-only,runtime inputs equal. READY awaiting full/browser/normal submit slot;HLS/torrent separately open. test_logs/TEST_LOG_2026-10-22_14-25-00_client-reliability-9-ready.md"
+  "evidence": "HEAD-only fix e9c960ed/merged09f52bdd durably landed f41ac656 normalgateexit0,435discovered/435unique starts missingextra0,ancestry0;build/artifactexit0;controlled native Chromium+Firefox lifecycle PASS with synthetic loadeddata/publicdeny. Prior60focused/16mutants/lint11. Resources released. HLS/torrent/RangeGET separately OPEN; no wholeStage3 claim. test_logs/TEST_LOG_2026-10-22_20-52-00_client-reliability-9-browser.md"
 }

test_logs/TEST_LOG_2026-10-22_20-48-00_client-reliability-9-landed.md

@@ -0,0 +1,8 @@
+# Client9 HEAD cancellation landing
+
+- Candidate product `e9c960edcf9f4ffd820f17dd6cf9dfe081e6bd29`; merged current unstable `26e9a787cfdc31b77ac35417a5f10e218e2b9662` safely as `09f52bdd5024d8b691500fc8d7181e6fe2a4336f`. Clean tree; `git diff --exit-code e9c960ed HEAD -- js/ui/urlHealthController.js tests/url-health-head-lifecycle.test.mjs` and `git diff --check` exit0 before submission. Initial sandbox merge could not write ORIG_HEAD; identical approved host merge succeeded.
+- Dispatch20:41:26Z and interpreter20:40:54Z granted exclusive normal gate, then sequential build. No parallel heavy job/browser launched. Fleet health checkpoints20:42/43/44/45/47Z: available RAM65-66%, swap51%, maximum observed81.8C; final63.9C. Swap occupancy guidance assessed with dispatch; no system setting/process changes.
+- `env -u NODE_TEST_CONTEXT -u UNIT_TEST_SHARD node tools/fleet/bin/landq.mjs submit` approved host exit0; submission `09f52bdd5024d8b691500fc8d7181e6fe2a4336f`. Unchanged normal install/npm-test gate exit0, landed20:47:18Z as `f41ac656f6d994616ff54b5877934311beecc5e4`. Durable result JSON and host `landq status <id>` agree. Sandbox PID visibility incorrectly reported dead during gating; host status confirmed alive, no second drain started.
+- Independent discovery/log comparison:435discovered/435starts/435unique, missing0/extra0 in lander artifacts/test_unit.log. Gate result exit0 proves completion. `git merge-base --is-ancestor 09f52bdd5024d8b691500fc8d7181e6fe2a4336f unstable` exit0; printed unstable tip f41ac656.
+- `env -u NODE_TEST_CONTEXT -u UNIT_TEST_SHARD npm run build > /tmp/client9-build-20261022.log 2>&1` naturalexit0; deployment artifact verifier passed version markup and hashed references. Own worktree clean after build. Heavy slot released20:48Z; browser slot requested, not started.
+- Earlier focused60/4files,16killed isolated mutants/cancelled0 and lint11 remain recorded evidence; not redundantly rerun. Native browser HEAD lifecycle, actual network bytes/decoder/playback, HLS/torrent/RangeGET, CPU benefit and wholeStage3 remain unverified/open. No remote push/deploy/cloud/signer/credential/scheduler action.

test_logs/TEST_LOG_2026-10-22_20-52-00_client-reliability-9-browser.md

@@ -0,0 +1,7 @@
+# Client9 controlled native browser lifecycle
+
+- On built candidate09f52bdd (runtime equal landedf41ac656), scratch `/tmp/client9-native-smoke.mjs` serves own dist on temporary localhost port; denies every nonlocal request. Actual controller, observer and cache modules; native DOM/IntersectionObserver/fetch/AbortController/media load and pause. No product/test/config edits.
+- Initial sandbox listener EPERM, identical host launch allowed. Initial scratch assertion expected0 attempted public requests but dependencies attempted4, all denied; corrected accounting to report denied attempts, not claim no attempts. Initial fresh control used a different URL; tightened to identical eventID/source and reran final matrix. These are scratch fixture corrections; retained tests/assertions unchanged, no retry/sleep/timeout relaxation.
+- Final `env -u NODE_TEST_CONTEXT -u UNIT_TEST_SHARD node /tmp/client9-native-smoke.mjs > /tmp/client9-native-smoke-final.log 2>&1` approved host naturalexit0. Chromium and Firefox each: HEAD3, native abortsignal1, cancellednull1, healthy2, cachewrites2, obsoletebadge writes0, media2 src cleared, slots0/queue0, pageerrors0, dependencyCDNattempts4 all denied. Cancellation prevents cache/badge writes, same-source fresh request succeeds, shared owner keeps HEAD alive and receives healthy badge while disposed badge stays checking.
+- Native media lifecycle but synthetic loadeddata completion. No actual decoder/playback, universal transport/network-byte cancellation, live relay/signer/cloud/peer, CPU improvement, HLS/torrent/RangeGET or wholeStage3 qualification. Native signal count proves signal abortion, not server-observed bytes saved. Ignored-abort/missing-AbortController/timer/late-callback controls are recorded unit evidence, not this browser matrix.
+- Browsers and temporary server closed naturally in finally; all heavy/browser resources released. Preserved preview3000 and peer processes.

todo/TODO_2026-10-22_20-48-00_client-reliability-9.md

@@ -0,0 +1,4 @@
+- [x] HEAD candidate merged, unchanged normal gate435unique/missing0/extra0 and durable landing f41ac656, ancestry0.
+- [x] Sequential build/artifact exit0; heavy resources released.
+- [ ] Separate allocated native browser HEAD lifecycle smoke and honest limitations.
+- [ ] HEAD slice closure disposition; HLS/torrent separately routed and still open.

todo/TODO_2026-10-22_20-52-00_client-reliability-9.md

@@ -0,0 +1,4 @@
+- [x] HEAD-only fix normally landed f41ac656 with435unique files and target ancestry0.
+- [x] Build/artifact and controlled native Chromium/Firefox lifecycle smoke pass; resources released.
+- [ ] Docs-only final evidence landing and HEAD closure disposition.
+- [ ] HLS/torrent/RangeGET separately routed and measured; broader Stage3 unqualified.