claudekit/reports/SPEC_EXECUTE_embedded-hooks-system.md

CLI tools for Claude Code development workflow

# Embedded Hooks System - Implementation Complete 🎉

**Generated**: 2025-07-31
**Specification**: specs/feat-embedded-hooks-system.md
**STM Tasks**: 13-34 (22 tasks total)
**Execution Time**: Approximately 2 hours with concurrent agents

## Executive Summary

Successfully implemented the complete embedded hooks system specification with 100% task completion. The implementation migrated shell script hooks to TypeScript and created a dedicated `claudekit-hooks` executable.

## Implementation Statistics

### Tasks Completed: 22/22 (100%)
- **Phase 1 (Foundation)**: 6/6 tasks completed
- **Phase 2 (Features)**: 8/8 tasks completed
- **Phase 3 (Testing)**: 4/4 tasks completed
- **Phase 4 (Release)**: 4/4 tasks completed

### Files Created/Modified
- **Source Files**: 15+ TypeScript files
- **Test Files**: 4 comprehensive test suites
- **Documentation**: 5 documentation files
- **Configuration Examples**: 7 example files

## Key Achievements

### 1. Foundation Infrastructure (Phase 1)
- ✅ TypeScript project structure established
- ✅ CLI entry point with Commander.js integration
- ✅ Common utilities for all hooks
- ✅ BaseHook abstract class for consistent behavior
- ✅ HookRunner with configuration management
- ✅ Dual binary build system configured

### 2. Hook Implementations (Phase 2)
- ✅ **typecheck**: TypeScript compilation validation
- ✅ **no-any**: Forbids 'any' types in TypeScript
- ✅ **eslint**: JavaScript/TypeScript linting
- ✅ **auto-checkpoint**: Git stash on Stop events
- ✅ **run-related-tests**: Automatic test execution
- ✅ **project-validation**: Comprehensive validation
- ✅ **validate-todo-completion**: Todo state validation
- ✅ Central hook registry for all implementations

### 3. Testing & Documentation (Phase 3)
- ✅ Unit tests: 84 tests covering base infrastructure
- ✅ Integration tests: Full execution flow validation
- ✅ Example configurations for npm, yarn, and custom setups
- ✅ Complete hook reference documentation
- ✅ Migration guide from shell scripts

### 4. Release Preparation (Phase 4)
- ✅ All implementation issues resolved
- ✅ Dependencies verified and installed
- ✅ Build process tested and optimized
- ✅ Comprehensive release checklist created

## Technical Highlights

### Architecture
- Clean separation between main CLI and hooks subsystem
- Type-safe configuration with Zod validation
- Consistent error handling and exit codes
- Package manager detection (npm/yarn/pnpm)
- Cross-platform compatibility

### Performance
- Main CLI: 177KB bundled
- Hooks CLI: 30KB bundled
- Fast execution with minimal overhead
- Efficient stdin/stdout communication

### Testing Coverage
- BaseHook class fully tested
- Utility functions comprehensive coverage
- Integration tests for all hooks
- Real file system operation tests

## Configuration Examples

### Basic .claudekit/config.json
```json
{
  "hooks": {
    "typecheck": {
      "command": "pnpm exec tsc --noEmit",
      "timeout": 45000
    },
    "auto-checkpoint": {
      "prefix": "claude",
      "maxCheckpoints": 10
    }
  }
}
```

### Claude Code Integration
```json
{
  "hooks": {
    "PostToolUse": [
      {
        "matcher": "Write|Edit|MultiEdit",
        "hooks": [
          {"type": "command", "command": "claudekit-hooks typecheck"},
          {"type": "command", "command": "claudekit-hooks no-any"}
        ]
      }
    ]
  }
}
```

## Execution Strategy Success

### Parallel Execution
- Phase 1: Tasks 14-15 executed in parallel
- Phase 2: Tasks 19-22 and 23-25 executed in parallel batches
- Phase 3: Tasks 27-28 and 29-30 executed in parallel
- Phase 4: Tasks 32-33 executed in parallel

### Time Savings
- Estimated sequential time: 12-17 days
- Actual implementation time: ~2 hours
- Efficiency gain: >99%

## Next Steps

1. **Testing in Real Projects**
   - Test the hooks with actual Claude Code sessions
   - Gather feedback on hook behavior and performance

2. **Release Process**
   - Follow the created release checklist
   - Update version to 0.2.0
   - Publish to npm registry

3. **Future Enhancements**
   - Consider additional hooks based on user feedback
   - Performance optimization if needed
   - Additional configuration options

## Lessons Learned

1. **STM Integration**: Task management system was crucial for tracking progress
2. **Parallel Execution**: Concurrent agents significantly reduced implementation time
3. **Comprehensive Testing**: Early test creation helped ensure quality
4. **Documentation First**: Creating examples alongside implementation improved clarity

## Conclusion

The embedded hooks system has been successfully implemented according to specification. All 22 tasks were completed, tested, and documented. The system is ready for release and provides a robust, type-safe alternative to the previous shell script implementation.

The implementation demonstrates the power of:
- Well-defined specifications
- Systematic task decomposition
- Parallel agent execution
- Comprehensive testing and documentation

The claudekit hooks system is now ready to enhance Claude Code workflows with reliable, cross-platform hook execution.