Revert "merge: integrate extension auto-update"

This reverts commit 322475860a, reversing
changes made to f52d9d7413.

.project-docs/50-evidence/evidence-index.md

@@ -20,7 +20,8 @@ Use this index for searchable, traceable evidence records.
 | 2026-09-02 | Leadership-dashboard filtering and summary interaction | Repository and focused regression verified; merged runtime not restarted | [Integration record](../30-worklog/tasks/20260902-integrate-all-push-c93a7f21.md) | Single-connection bounded reads, SQL prefiltering, selective hydration, 20-row paging, cancellation/timeout feedback, and display-only metric cards with explicit filters passed combined regression. |
 | 2026-09-02 | Native ERP product search for ordering forms | Root cause and live search-only behavior verified; repository/release verified; extension not reloaded | [Integration task](../30-worklog/tasks/20260902-integrate-product-search-3b7f6a20.md) | Both `plan_add.asp` and `orders_adds.asp` returned exactly one target product for the full keyword with radios left unchecked and no save; extension `0.5.165` now uses native non-empty search before its bounded empty-query fallback while retaining deterministic unique matching. |
 | 2026-09-03 | Account-scoped ERP queues, assignee-only executable routing, and force delete | Repository and full regression verified; runtime not deployed or mutated | [Integration task](../30-worklog/tasks/20260903-finalize-account-routing-7c4e2a91.md) | Source task `20260902-per-account-queue-hard-delete-a6d9f2c1` replaced global head-of-line blocking with per-assignee FIFO/advisory locks, isolated SSE/plugin-result/browser-command routing from administrator read visibility, and separated reversible archive from lifecycle-independent physical deletion. |
-| 2026-09-03 | Adaptive ERP readiness and central extension host updates | Repository, release package, and full regression verified; production migration/bootstrap/publication not performed | [Integration task](../30-worklog/tasks/20260903-finalize-extension-update-a6c4e192.md) | Source commits `500034b` and `f08aac0` added immediate-first bounded ERP entry readiness, extension `0.5.167`, migration 019, private OSS publication, multi-account ECS host safety, bounded Cloud Assistant deployment, rollback/no-downgrade checks, and target-version heartbeat verification. |
+| 2026-09-03 | Adaptive ERP readiness and central extension host updates | Historical repository evidence; reverted from `main` before production rollout | [Original integration task](../30-worklog/tasks/20260903-finalize-extension-update-a6c4e192.md) | Source commits `500034b` and `f08aac0`, release `0.5.167`, and their verification remain recoverable at exact commit `b2e33e2` on remote branch `codex/backup-extension-update-20260903-b2e33e2`; they no longer define active source or release behavior. |
+| 2026-09-03 | Extension-update iteration rollback | Backup ref verified; active code/release restored and regression rechecked | [Rollback task](../30-worklog/tasks/20260903-backup-revert-extension-update-c71a4e92.md) | The complete iteration was backed up before a normal revert of merge `3224758`; active main returns to extension `0.5.165` and migration 018 without rewriting Git history. |
 
 ## When To Add Evidence