storage-cors-4 dispatch-3: route independently reproduced stale feed lifecycle fix

docs/agents/backlog/storage-cors-4.json

@@ -0,0 +1,10 @@
+{
+  "id": "storage-cors-4",
+  "area": "storage-cors",
+  "status": "open",
+  "title": "Prevent obsolete registered feed completions restoring deleted or replaced DOM",
+  "blockedOn": "Implement separately only after existing storage3 candidate is frozen and submitted",
+  "addedOn": "2026-10-22",
+  "filedAt": "89f8923c6e83b79a2b8874f811cdff2af6a809d0",
+  "brief": "docs/agents/prompts/storage-cors.md"
+}