- Add shared RunAuditService in packages/engine/src/run-audit.ts for tracking agent run state transitions
- Instrument HeartbeatMonitor to log run mutations (create, complete, error, skip) with timestamps and context
- Instrument TaskExecutor to log run mutations during task execution lifecycle
- Instrument Merger to log run mutations during merge workflow
- Add run-audit pattern documentation to project memory
- Fix: remove audit calls from non-run recovery methods to avoid false positives