docs: record client-reliability-9 build and artifact qualification

Local build and existing artifact verifier exit0/version15868a91. Preserve sandbox swcompat history skip and unchanged-input host lint evidence; native/browser/live boundaries remain open.

test_logs/TEST_LOG_2026-10-26_19-43-00_client-reliability-9-build.md

@@ -0,0 +1,9 @@
+# Client9 build/artifact stage
+
+- Dispatch19:41:31 grants sole next local build+existing artifact stage conditional fresh health; no browser/previewserver/deploy or repeated lint/full/focused.
+- Own HEAD7594c54deb8e9885dbe2bf203027377982965240 includes evidence d5a69faa merged with verified product landing af61c271; clean. Fresh19:41:44 healthOK CPU77.1C/RAM63%/swap-in0; START19:41:58.
+- `env -u NODE_TEST_CONTEXT -u UNIT_TEST_SHARD npm run build > state/evidence/client9-torrent-validation-20261026/build-1942.log 2>&1`: naturalexit0. Existing chained `verify:dist:deploy-artifact` passed version markup and hashed asset references.
+- Build-derived version15868a91/date2026-10-26 and SW bitvid-sw-2026-10-26-15868a91. This is an artifact identifier, not a Git SHA. dist/index.html SHA2569c48e0fefe980fa33f268180e778b538e0e1d1aa290aeda2d4deac99dd85ec8a. Build output stays own ignored dist; no shared preview update or server started/replaced.
+- Limitation preserved: build sw-compat precheck skipped Git-history lookup in sandbox. Prior approved host lint11 includes swcompat pass on unchanged runtime inputs; no new swcompat-check claim or repeated lint. Build also reports stale caniuse-lite data; dependency/config unchanged.
+- `git status --short --branch`: clean. Post19:42:25 healthOK CPU78.1C/RAM63.5%/swap-in0. RELEASE dispatch19:42:43; distinct native torrent/browser+QA timing stage still requires routing. Hold ownerdispatch, nextlight landing/build docs.
+- Normal product gate438 and durable af61c271/ancestry remain valid; actual peers/network byte teardown/real playback/CPU benefit/wholeStage3 remain unverified. Item9 remains open.