## Task Status: Worker Pool & Execution (Task 3)
**Agent:** Coder-Gamma
**Status:** complete
**Worktree:** `/home/ani/Projects/community-ade-wt/worker-pool`

### Completed Files:

**Source Files (`src/`):**
1. `src/worker/Pool.ts` - Worker pool orchestrator
   - Spawns and manages multiple worker processes
   - Task queue with priority support
   - Auto-scaling based on workload
   - Graceful shutdown handling
   - Comprehensive statistics and health reporting

2. `src/worker/Process.ts` - Individual worker process wrapper
   - Child_process fork management
   - Worker state machine (IDLE, RUNNING, STOPPING, etc.)
   - Task assignment and lifecycle tracking
   - Heartbeat and health monitoring hooks
   - Event-based communication with parent

3. `src/worker/HealthMonitor.ts` - Health checks and restart logic
   - Configurable health check intervals (default: 5s)
   - Heartbeat timeout detection (default: 30s)
   - Task stall detection (default: 5 min)
   - Automatic worker restart on failure
   - Consecutive failure tracking before restart

4. `src/worker/TaskExecutor.ts` - Task execution in workers
   - Task handler registration system
   - Built-in task types (echo, compute, delay, healthCheck, executeCode, executeShell)
   - Task timeout handling
   - Progress reporting support
   - Heartbeat generation

5. `src/worker/WorkerScript.ts` - Example worker entry point
   - Demonstrates task executor setup
   - Registers built-in and example tasks

6. `src/index.ts` - Module exports

**Test Files (`tests/`):**
7. `tests/worker/Pool.test.ts` - Comprehensive worker lifecycle tests
   - Pool creation and initialization
   - Worker lifecycle (spawn, restart, exit)
   - Task execution (single, concurrent, priority)
   - Scaling up/down
   - Graceful shutdown
   - Statistics reporting

**Configuration Files:**
8. `package.json` - TypeScript dependencies and scripts
9. `tsconfig.json` - TypeScript configuration
10. `jest.config.js` - Test configuration
11. `tests/setup.ts` - Test setup

### Key Features Implemented:

✅ **Worker Pool Management:**
- Configurable min/max worker counts
- Auto-scaling based on queue depth
- Graceful shutdown with task completion wait

✅ **Process Management:**
- Child_process fork for each worker
- Worker state tracking (IDLE, RUNNING, STOPPING, etc.)
- Automatic respawn on unexpected exit

✅ **Health Monitoring:**
- Health checks every 5 seconds
- Heartbeat tracking (30s timeout)
- Task stall detection
- Automatic restarts after 3 consecutive failures

✅ **Task Execution:**
- Priority queue support
- Task timeout handling
- Progress reporting
- Built-in task types for common operations

✅ **Worker Messages:**
- `heartbeat` - Health check response
- `task_complete` - Successful task completion
- `task_failed` - Task execution failure
- `task_progress` - Progress updates
- `ready` - Worker ready signal

### Blockers:
None

### Next:
Integration with other components (Queue Core from Task 1, API Contracts from Task 2)

### Time Remaining:
0 minutes - Task complete

---
**Completion Command:**
```bash
git add -A && git commit -m "worker-pool: Process management and health monitoring"
```