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/modules/excitor/README.md

@@ -2,6 +2,10 @@
 
 Excitor computes deterministic consensus across VEX claims, preserving conflicts and producing attestable evidence for policy suppression.
 
+## Latest updates (2025-11-05)
+- Consensus API beta documented with canonical JSON samples and DSSE packaging guidance (`docs/updates/2025-11-05-excitor-consensus-beta.md`).
+- README links to Link-Not-Merge consensus milestone and preview endpoints for downstream integration.
+
 ## Responsibilities
 - Ingest Excititor observations and compute per-product consensus snapshots.
 - Provide APIs for querying canonical VEX positions and conflict sets.
@@ -25,6 +29,7 @@ Excitor computes deterministic consensus across VEX claims, preserving conflicts
 
 ## Related resources
 - ./scoring.md
+- ../../vex/consensus-json.md (beta consensus payload sample)
 
 ## Backlog references
 - DOCS-EXCITOR backlog referenced in architecture doc.