storage-cors-1 record merged-tree checks and pending coordinated gate

test_logs/TEST_LOG_2026-10-20_13-44-40_storage-cors.md

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+# storage-cors-1 merged-tree verification
+- Product commit:2fb6a536568eeb5b4cc04257255f98cde34b7f66.
+- Required merge:0919be930c1c8cc8e26685381b3763b660f741ed (git merge unstable; sandbox EROFS required authorized permission retry). Incoming changes administrative only.
+- `env -u NODE_TEST_CONTEXT node scripts/run-unit-tests.mjs storage-cors-preservation storage-cache-control multipart-empty-file-guard`: exit0,3/3 files,13 scenarios.
+- `env -u NODE_TEST_CONTEXT npm run lint`: exit0,11 checks; same sandbox permission for read-only git subprocess.
+- `env -u NODE_TEST_CONTEXT npm run build`: exit0 incl deployment-artifact verifier.
+- Full/submit reserved after client; no explicit grant as of13:44:33UTC. No browser/cloud or concurrent-writer qualification. No landing claim.

todo/TODO_2026-10-20_13-44-40_storage-cors.md

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+# storage-cors-1
+- [x] Offline loss reproduced and dispatch independently confirmed; fix routed.
+- [x] Preserve policy implementation2fb6a536; merged unstable0919be93.
+- [x]9 regression scenarios,10 restored mutants,focused3/3 files/13 scenarios; lint11/11 and build pass on merged tree.
+- [ ] Dispatch explicit full-suite/submit grant (client ahead).
+- [ ] Full normal gate; submit/durable landing+unstable ancestry; close backlog; dispatch final evidence.
+- Remaining scope: actual cloud/API permissions/serialization and concurrent policy writers unverified; no browser needed.