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/excititor/TASKS.md

@@ -4,6 +4,6 @@
 
 | ID | Status | Owner(s) | Description | Notes |
 |----|--------|----------|-------------|-------|
-| EXCITITOR-DOCS-0001 | TODO | Docs Guild | Validate that ./README.md aligns with the latest release notes. | See ./AGENTS.md |
+| EXCITITOR-DOCS-0001 | DONE (2025-11-05) | Docs Guild | Validate that ./README.md aligns with the latest release notes. | README now links to the [Excitor consensus beta release note](../../updates/2025-11-05-excitor-consensus-beta.md) and [consensus JSON sample](../../vex/consensus-json.md). |
 | EXCITITOR-OPS-0001 | TODO | Ops Guild | Review runbooks/observability assets after next sprint demo. | Sync outcomes back to ../../TASKS.md |
 | EXCITITOR-ENG-0001 | TODO | Module Team | Cross-check implementation plan milestones against `/docs/implplan/SPRINT_*.md`. | Update status via ./AGENTS.md workflow |