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>

bin/oversight

@@ -0,0 +1,65 @@
+#!/bin/bash
+#
+# Architectural Test Pipeline CLI
+# ================================
+# Multi-layer oversight system for continuous validation.
+#
+# Usage:
+#   oversight run              Full pipeline execution
+#   oversight run --inject     With injection tests
+#   oversight quick            Quick validation
+#   oversight validate --phase 5   Validate specific phase
+#   oversight report           Generate report
+#   oversight matrix           Show phase status matrix
+#
+
+set -euo pipefail
+
+OVERSIGHT_DIR="/opt/agent-governance/testing/oversight"
+
+# Show help if no args or --help
+if [[ $# -eq 0 ]] || [[ "${1:-}" == "--help" ]] || [[ "${1:-}" == "-h" ]]; then
+    cat << 'EOF'
+Architectural Test Pipeline
+===========================
+
+Multi-layer oversight system for continuous validation across all 12 phases.
+
+Commands:
+  run [options]          Run full pipeline
+  quick                  Quick validation (phases + anomalies only)
+  validate --phase N     Validate specific phase in detail
+  report [--inject]      Generate comprehensive report
+  matrix                 Show phase status matrix
+  status                 Show pipeline status
+
+Options:
+  --phase N              Focus on specific phase
+  --inject               Run injection tests
+  --unsafe               Disable safe mode (caution!)
+  --auto-fix             Enable auto-fix for approved changes
+  --verbose, -v          Verbose output
+  --json                 Output as JSON
+
+Layers:
+  1. Bug Window Watcher     Real-time anomaly detection
+  2. Suggestion Engine      AI-driven fix recommendations
+  3. Council Review         Multi-agent decision making
+  4. Phase Validator        Coverage across all phases
+  5. Error Injector         Controlled fault injection
+  6. Reporter               Comprehensive reporting
+
+Examples:
+  oversight run                       # Full pipeline
+  oversight run --inject --verbose    # With injection tests
+  oversight validate --phase 5        # Focus on Phase 5
+  oversight matrix                    # Quick status overview
+
+Documentation: /opt/agent-governance/testing/oversight/README.md
+EOF
+    exit 0
+fi
+
+# Execute pipeline
+cd "${OVERSIGHT_DIR}"
+exec python3 -m testing.oversight.pipeline "$@"