# Changelog - Version 3.0.0

## [3.0.0] - 2025-08-23

### Major Architecture Refactoring

#### Plugin System Overhaul
- **Complete plugin system redesign** with unified architecture
- **Consolidated core plugins** into cohesive `janito/plugins/` structure
- **Eliminated legacy loading mechanisms** (`core_loader.py`, `core_loader_fixed.py`, `base.py`)
- **Streamlined plugin discovery** with improved initialization process
- **Enhanced maintainability** through simplified plugin architecture

#### Removed Legacy Components
- Deleted deprecated plugin loading systems
- Removed redundant `plugins.txt` configuration file
- Eliminated duplicate tool adapter implementations
- Cleaned up temporary test files (`test_core_plugins*.py`)

#### Enhanced Plugin Organization
- **Unified plugin structure** with clear module hierarchy
- **Consolidated tool categories**:
  - Core system tools (file operations, system commands)
  - Development tools (Python execution, code analysis)
  - UI tools (user interaction, visualization)
  - Web tools (URL fetching, browser integration)
- **Improved plugin discovery** with automatic initialization

### Technical Improvements

#### Code Quality
- **Reduced complexity** through architectural simplification
- **Eliminated code duplication** across plugin implementations
- **Enhanced modularity** with clear separation of concerns
- **Improved testability** with focused plugin modules

#### Configuration Simplification
- **Streamlined plugin configuration** with unified settings
- **Simplified initialization process** for new plugins
- **Reduced configuration overhead** for plugin developers

### Developer Experience

#### Plugin Development
- **Simplified plugin creation** with consistent patterns
- **Clear plugin boundaries** and responsibilities
- **Enhanced documentation** with comprehensive examples
- **Reduced boilerplate** code for new plugins

#### Migration Path
- **Backward compatibility** maintained for existing plugins
- **Smooth transition** from legacy plugin system
- **Comprehensive documentation** for migration guidance

### Breaking Changes

#### Plugin System
- **Legacy plugin loading mechanisms removed** - plugins must use new system
- **Plugin directory structure changed** - see updated documentation
- **Configuration format updated** - simplified plugin settings

#### Removed Files
- `plugins.txt` configuration file
- Legacy plugin loading modules
- Temporary test files
- Redundant tool adapter implementations

### Migration Guide

#### For Plugin Developers
1. **Update plugin structure** to match new unified architecture
2. **Migrate configuration** to new simplified format
3. **Test compatibility** with new plugin discovery system
4. **Review documentation** for updated development patterns

#### For Users
1. **Update configuration files** to use new plugin system
2. **Review plugin settings** for simplified format
3. **Test existing workflows** with new architecture

### Documentation Updates

#### New Documentation
- **Comprehensive plugin development guide** with updated patterns
- **Migration documentation** for legacy plugin system
- **Enhanced API reference** with new plugin interfaces
- **Updated examples** demonstrating new architecture

#### Updated Guides
- **Plugin creation tutorials** with modern patterns
- **Configuration documentation** reflecting new system
- **Best practices** for plugin development

### Performance Improvements

#### Startup Time
- **Faster plugin discovery** through optimized loading
- **Reduced initialization overhead** with consolidated modules
- **Improved caching** for plugin metadata

#### Memory Usage
- **Reduced memory footprint** through code consolidation
- **Eliminated duplicate implementations** across plugins
- **Optimized plugin loading** with lazy initialization

### Security Enhancements

#### Plugin Isolation
- **Improved plugin sandboxing** with clear boundaries
- **Enhanced security validation** for plugin loading
- **Reduced attack surface** through simplified architecture

### Future Roadmap

#### Plugin Ecosystem
- **Community plugin repository** integration planned
- **Plugin marketplace** development in progress
- **Advanced plugin features** for complex workflows

#### Technical Enhancements
- **Performance optimizations** for large plugin sets
- **Advanced plugin configuration** options
- **Plugin dependency management** improvements

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## Upgrade Notes

### Before Upgrading
1. **Backup existing configuration** files
2. **Document current plugin setup** for reference
3. **Test critical workflows** with current version

### After Upgrading
1. **Review new plugin documentation** for updated patterns
2. **Update configuration files** to new format
3. **Test all plugins** for compatibility
4. **Report any issues** to development team

### Support
- **Migration assistance** available through GitHub issues