feat: Implement approvals workflow and notifications integration

- Added approvals orchestration with persistence and workflow scaffolding.
- Integrated notifications insights and staged resume hooks.
- Introduced approval coordinator and policy notification bridge with unit tests.
- Added approval decision API with resume requeue and persisted plan snapshots.
- Documented the Excitor consensus API beta and provided JSON sample payload.
- Created analyzers to flag usage of deprecated merge service APIs.
- Implemented logging for artifact uploads and approval decision service.
- Added tests for PackRunApprovalDecisionService and related components.

docs/dev/raw-linkset-backfill-plan.md

@@ -1,6 +1,6 @@
 # Raw Linkset Backfill & Adoption Plan
 
-_Last updated: 2025-10-31_  
+_Last updated: 2025-11-06_  
 Owners: Concelier Storage Guild, DevOps Guild, Policy Guild
 
 ## Context
@@ -39,7 +39,7 @@ Owners: Concelier Storage Guild, DevOps Guild, Policy Guild
 | 2025-10-31 | Handshake w/ Policy | Agreement to consume `rawLinkset`; this document created. |
 | 2025-11-01 | Draft migration script | Validate against staging dataset snapshots. |
 | 2025-11-04 | Storage task CONCELIER-STORE-AOC-19-005 due | Deliver script + runbook for review. |
-| 2025-11-06 | Staging backfill rehearsal | Target < 30 min runtime on 5M observations. |
+| 2025-11-06 | Staging backfill rehearsal | Target < 30 min runtime on 5M observations; docs refreshed to highlight raw vs canonical invariants and analyzer guardrails. |
 | 2025-11-08 | Policy fixtures updated | POL engine branch consumes `rawLinkset`. |
 | 2025-11-11 | Production rollout window | Pending DevOps sign-off after rehearsals. |