Adds task lineage storage infrastructure (FN-3990 Step 2), introducing a dedicated `task-lineage.ts` module and related types to track task identity and association relationships, with corresponding database schema and store support plus tests and documentation for the lineage reconciliation process
Fusion-Task-Id: FN-3990
Merged agent provisioning approval policies into the engine with guard controls that restrict which agents can be created and by whom, integrated through the CLI extension and core policy definitions.
Fusion-Task-Id: FN-3953
- Remove unused imports across 25 files in engine package
- Remove unused variable declarations in ipc-worker.ts, child-process-runtime.ts, and mission-autopilot.ts
- Clean up unnecessary imports in agent-instructions.ts, agent-tools.ts, cron-runner.ts, executor.ts, and other modules
- Minor cleanup in notifier.ts, peer-exchange-service.ts, pi.ts, plugin-runner.ts, and other files
- Improves code quality and reduces potential confusion from unused code
- 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
