Merge branch 'unstable' into area/dispatch

test_logs/TEST_LOG_2026-10-20_13-58-00_client-reliability-5-landed.md

@@ -0,0 +1,9 @@
+# Item5 product landing and release proof
+
+- Product12f927321fdd0a945f3bdcfb3a618ef16b54ff7c; verified merged-tree checksf2a392fa; final notes6944d6f9 and documentation-only unstable merge→submission4bc52f9ded7484b93fdb2f6b082666e6aeafe44e. Product/tests identical to verified tree after final merge (git diff exit0); no blanket reruns.
+- `env -u NODE_TEST_CONTEXT node tools/fleet/bin/landq.mjs submit`: exit0 normal queue/drain. MCP land_status4bc52f9d durable landed0bd0b1c3e36542b567cb58c6cd5de0a577cd003a at2026-10-20T13:57:06.683Z. Result detail confirms unchanged normal npm-ci/install+npm-test gate exit0. `git log -1 unstable` printed0bd0b1c3; `git merge-base --is-ancestor 4bc52f9d unstable` exit0.
+- Local checks:427/427 unit files (60s/file diagnostic),focused28/4files,lifecycle18,six rejected/reverted mutants,lint11/build-artifact/native Chromium+Firefox controlled IO smoke all pass. Six new scenarios preserved existing assertions. Commands/mapping in ready/precommit/unique-integrity notes.
+- Defect count obsolete mirror HEAD1→0 after disposed active primary/later-mirror failure. Shared/rejoin/retry/hidden reveal healthy;disposed connected badges unchanged,cancelled cache null,resource/slot0,external requests/pageerrors0. Unit actual cache;browser cache twin/external media IO controlled.
+- Resource request13:32:54→grant13:43:51.426UTC wait10m57s. Browser closed/released before product submit13:51:49. Normal landing at13:57:06; product proof/release mailbox13:57:51UTC releases exclusive expensive slot to dispatch/storage. No full/browser before grant,no extra reruns. Preview3000 untouched;dispatch owns refresh. Pickup13:27:49/tool approval deadline separately documented as tooling stall.
+- Backlog close executed only after durable product proof. Product landing+slot release event sent to dispatch. Closure metadata normal queue/final event remains; no next item started.
+- Unverified/out of scope:active HEAD/media/HLS/torrent abort,actual decoding/playback fallback/live peers,CPU-RSS/full Stage3,production/signers/wallet/deploy.