Initial commit: Agent Governance System Phase 8

Phase 8 Production Hardening with complete governance infrastructure:

- Vault integration with tiered policies (T0-T4)
- DragonflyDB state management
- SQLite audit ledger
- Pipeline DSL and templates
- Promotion/revocation engine
- Checkpoint system for session persistence
- Health manager and circuit breaker for fault tolerance
- GitHub/Slack integrations
- Architectural test pipeline with bug watcher, suggestion engine, council review
- Multi-agent chaos testing framework

Test Results:
- Governance tests: 68/68 passing
- E2E workflow: 16/16 passing
- Phase 2 Vault: 14/14 passing
- Integration tests: 27/27 passing

Coverage: 57.6% average across 12 phases

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

evidence/packages/evd-20260123-171822-13ed5e2e/MANIFEST.json

@@ -0,0 +1,11 @@
+{
+  "package_id": "evd-20260123-171822-13ed5e2e",
+  "files": [
+    {
+      "name": "evidence.json",
+      "size": 967,
+      "checksum": "2573b168008b171be16f02b29aa2aa3755d5ee0ab8edd6c4431bb79d6523a8b0"
+    }
+  ],
+  "created_at": "2026-01-23T17:18:22.343350+00:00"
+}

evidence/packages/evd-20260123-171822-13ed5e2e/evidence.json

@@ -0,0 +1,39 @@
+{
+  "package_id": "evd-20260123-171822-13ed5e2e",
+  "agent_id": "test-agent",
+  "agent_tier": 1,
+  "task_id": "test-task-001",
+  "action_type": "terraform",
+  "created_at": "2026-01-23T17:18:22.342850+00:00",
+  "timing": {
+    "preflight_start": "2026-01-23T17:18:22.342885+00:00",
+    "preflight_end": "2026-01-23T17:18:22.342889+00:00",
+    "execution_start": "2026-01-23T17:18:22.342892+00:00",
+    "execution_end": "2026-01-23T17:18:22.342898+00:00",
+    "verification_start": null,
+    "verification_end": null
+  },
+  "artifacts": {
+    "plan_artifact_id": null,
+    "plan_checksum": null
+  },
+  "state": {
+    "before": null,
+    "after": null,
+    "diff": null
+  },
+  "health_checks": [],
+  "results": {
+    "preflight_passed": true,
+    "execution_success": true,
+    "verification_passed": false
+  },
+  "errors": [],
+  "warnings": [],
+  "notes": [
+    {
+      "note": "Demo evidence package",
+      "timestamp": "2026-01-23T17:18:22.342895+00:00"
+    }
+  ]
+}