# Claude PM Framework Refactoring Initiative v0.9.1

## Epic Overview
**Epic**: Claude PM Framework Refactoring Initiative v0.9.1  
**Start Date**: 2025-07-16  
**Target Version**: 0.9.1  
**Current Version**: 0.9.0  

## Worktree Configuration
- **Worktree Path**: `/Users/masa/Projects/claude-multiagent-pm-refactor-v0.9.1`
- **Branch**: `feature/refactor-framework-v0.9.1`
- **Remote Tracking**: `origin/feature/refactor-framework-v0.9.1`
- **Base Commit**: `0643ceb` (Development snapshot: User guide and cleanup phase pre-v0.9.1)

## Refactoring Goals

### Primary Objectives
1. **Service-Oriented Architecture**: Transition from monolithic components to modular services
2. **Dependency Injection**: Implement proper DI container for service management
3. **Complexity Reduction**: Simplify critical components through interface extraction
4. **Performance Optimization**: Maintain 99.7% performance improvements while reducing complexity
5. **Maintainability**: Improve code organization and reduce technical debt

### Critical Components for Refactoring
1. **parent_directory_manager**: Core service for directory and deployment management
2. **agent_registry**: Agent discovery and orchestration system
3. **shared_prompt_cache**: Performance optimization service
4. **core services**: Unified service architecture

## 5-Phase Refactoring Plan

### Phase 1: Interface Extraction ✅ (Completed)
- **Status**: Completed in main branch
- **Achievement**: Interface definitions extracted for core services
- **Branch**: Already integrated into main

### Phase 2: Service Container Implementation
- **Target**: Create DI container and service registry
- **Components**: Service factory, lifecycle management
- **Deliverables**: 
  - Service container architecture
  - Service registration and resolution
  - Lifecycle management protocols

### Phase 3: Component Refactoring
- **Target**: Refactor core components to use service container
- **Components**: parent_directory_manager, agent_registry
- **Deliverables**:
  - Refactored service implementations
  - Dependency injection integration
  - Performance validation

### Phase 4: Cache Service Integration
- **Target**: Integrate shared_prompt_cache with service architecture
- **Components**: Cache service, performance monitoring
- **Deliverables**:
  - Cache service integration
  - Performance benchmarking
  - Optimization validation

### Phase 5: Testing and Validation
- **Target**: Comprehensive testing and integration validation
- **Components**: End-to-end testing, performance regression testing
- **Deliverables**:
  - Full test coverage
  - Performance validation
  - Documentation updates

## Version Management

### Current State
- **Framework Version**: 0.9.0
- **Next Target**: 0.9.1 (minor version increment)
- **Version Files**: VERSION, package.json, pyproject.toml

### Version Update Strategy
- Increment to 0.9.1 upon completion of refactoring initiative
- Maintain version consistency across all package files
- Update documentation and changelog for 0.9.1 release

## Development Workflow

### Branch Strategy
- **Feature Branch**: `feature/refactor-framework-v0.9.1`
- **Base Branch**: `main` (from 0643ceb)
- **Integration**: Regular integration with main branch
- **Release**: Merge to main when refactoring complete

### Progress Tracking
- **Documentation**: This file for overall progress
- **Phase-specific**: Individual phase documentation
- **Testing**: Validation results for each phase
- **Performance**: Benchmarking and optimization tracking

## Key Considerations

### Backward Compatibility
- Maintain API compatibility where possible
- Provide migration path for breaking changes
- Document any compatibility impacts

### Performance Requirements
- Maintain or improve current performance metrics
- Preserve 99.7% cache hit ratio optimization
- Monitor service overhead and optimize

### Testing Strategy
- Unit tests for all refactored components
- Integration tests for service interactions
- Performance regression testing
- End-to-end workflow validation

## Risk Mitigation

### Development Risks
- **Complex Dependencies**: Use gradual refactoring approach
- **Performance Regression**: Continuous benchmarking
- **Integration Issues**: Regular integration testing

### Deployment Risks
- **Framework Integrity**: Maintain protection mechanisms
- **Version Consistency**: Automated version validation
- **Backup Systems**: Ensure backup functionality preserved

## Success Criteria

### Technical Metrics
- All services properly containerized and injectable
- Performance maintained or improved
- Code complexity reduced by measurable metrics
- Full test coverage maintained

### Operational Metrics
- Framework deployment still functional
- All agent operations working correctly
- Version management systems operational
- Documentation updated and accurate

## Next Steps

1. **Begin Phase 2**: Service Container Implementation
2. **Setup Development Environment**: Configure worktree for active development
3. **Create Service Architecture**: Design and implement DI container
4. **Progress Tracking**: Regular updates to this documentation

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**Last Updated**: 2025-07-16  
**Status**: Phase 1 Complete, Phase 2 Ready to Begin  
**Worktree**: Configured and Ready for Development