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>

checkpoint/CLAUDE.md

@@ -0,0 +1,100 @@
+# Context Checkpoint Skill
+
+## Overview
+
+The checkpoint skill preserves session context across token resets and orchestrates sub-agent calls with minimal token usage.
+
+## Commands
+
+### Create Checkpoint
+```bash
+/opt/agent-governance/bin/checkpoint now [--notes "description"]
+```
+Captures current state: phase, tasks, dependencies, variables, recent outputs.
+
+### Load Checkpoint
+```bash
+/opt/agent-governance/bin/checkpoint load [checkpoint_id]
+```
+Loads latest or specific checkpoint. Use `--json` for machine-readable output.
+
+### Compare Checkpoints
+```bash
+/opt/agent-governance/bin/checkpoint diff [--from ID] [--to ID]
+```
+Shows changes between checkpoints (phase, tasks, variables, dependencies).
+
+### List Checkpoints
+```bash
+/opt/agent-governance/bin/checkpoint list [--limit N]
+```
+Lists available checkpoints with timestamps and token counts.
+
+### Context Summary
+```bash
+/opt/agent-governance/bin/checkpoint summary --level minimal|compact|standard|full
+```
+Generates token-aware summaries:
+- `minimal` (~500 tokens): Phase + active task + agent
+- `compact` (~1000 tokens): + pending tasks + key variables
+- `standard` (~2000 tokens): + all tasks + dependencies
+- `full` (~4000 tokens): Complete context for complex operations
+
+### Auto-Orchestrate Mode
+```bash
+/opt/agent-governance/bin/checkpoint auto-orchestrate --model minimax|gemini|gemini-pro \
+    --instruction "command1" --instruction "command2" [--dry-run] [--confirm]
+```
+Delegates commands to OpenRouter models with automatic checkpointing.
+
+### Instruction Queue
+```bash
+/opt/agent-governance/bin/checkpoint queue list|add|clear|pop [--instruction "..."] [--priority N]
+```
+Manages pending instructions for automated execution.
+
+### Prune Old Checkpoints
+```bash
+/opt/agent-governance/bin/checkpoint prune [--keep N]
+```
+Removes old checkpoints, keeping the most recent N (default: 50).
+
+## When to Use
+
+1. **Before complex operations**: Create checkpoint to preserve state
+2. **After session reset**: Load checkpoint to restore context
+3. **Sub-agent calls**: Use `summary --level compact` to minimize tokens
+4. **Debugging**: Use `diff` to see what changed between checkpoints
+5. **Automated mode**: Use `auto-orchestrate` for humanless execution
+
+## Examples
+
+```bash
+# Save current state before risky operation
+checkpoint now --notes "Before database migration"
+
+# Restore after context reset
+checkpoint load
+
+# Get minimal context for sub-agent
+checkpoint summary --level minimal
+
+# Run automated commands with Minimax
+checkpoint auto-orchestrate --model minimax \
+    --instruction "run tests" \
+    --instruction "deploy if tests pass"
+
+# Queue instructions for later
+checkpoint queue add --instruction "backup database" --priority 10
+checkpoint queue list
+```
+
+## Integration
+
+Checkpoints are stored in:
+- `/opt/agent-governance/checkpoint/storage/` (JSON files)
+- DragonflyDB `checkpoint:latest` key (fast access)
+
+Audit logs go to:
+- SQLite: `orchestration_log` table
+- DragonflyDB: `orchestration:log` list