[client-reliability] client-reliability-9 record native lifecycle evidence and remaining scope

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_20-52-00_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_20-52-00_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.