## CHANGES
- Add suppress-think flag to hide thinking blocks
- Configure customizable start and end thinking tags
- Strip thinking content from final response output
- Update streaming logic to respect suppress-think setting
- Add YAML configuration support for thinking options
- Implement StripThinkBlocks utility function for content filtering
- Add comprehensive tests for thinking suppression functionality
### CHANGES
* Extract chat processing logic into separate function
* Create modular command handlers for setup, configuration, listing, management, and extensions
* Improve patterns loader with migration support and better error handling
* Simplify main CLI logic by delegating to specialized handlers
* Enhance code organization and maintainability
* Add tool processing for YouTube and web scraping functionality