### CHANGES
- Update `timestampRegex` to support optional seconds/milliseconds
- Change `seenSegments` to use `struct{}` for memory efficiency
- Refactor duplicate check using `struct{}` pattern
- Improve readability by restructuring timestamp logic
- Add deduplication map to track seen segments
- Skip duplicate text segments in plain VTT processing
- Skip duplicate segments in timestamped VTT processing
- Improve timestamp regex to handle more formats
- Use clean text as deduplication key consistently
## CHANGES
- Add storer import for proper git iteration control
- Use storer.ErrStop instead of nil for commit iteration termination
- Handle storer.ErrStop as expected condition in git walker
- Update cache comment to clarify Unreleased version skipping
- Change custom patterns warning to stderr output
- Add storer to VSCode spell checker dictionary
## CHANGES
- Add incremental processing for new Git tags since cache
- Implement `WalkHistorySinceTag` method for efficient history traversal
- Cache new versions and commits after AI processing
- Update AI summarization prompt for better release note formatting
- Remove conventional commit prefix stripping from commit messages
- Add custom patterns directory support to plugin registry
- Generate unique patterns file including custom directory patterns
- Improve session string formatting with switch statement
## CHANGES
- Replace println with fmt.Fprintln to stderr for errors
- Use os.MkdirTemp for secure temporary directory creation
- Remove unused time import from patterns loader
- Add proper error wrapping for file operations
- Handle RemoveAll errors with warning messages
- Improve error messages with context information
- Add explicit error checking for cleanup operations
### CHANGES
- Add early return if registry is nil to prevent panics.
- Introduce early return for non-chat tool operations.
- Update error message to use original input on HTML readability failure.
- Enhance error wrapping for playlist video fetching.
- Modify temp patterns folder name with timestamp for uniqueness.
- Improve error handling for patterns directory access.
### 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
### CHANGES
- Introduce `cmd` directory for all main application binaries.
- Move all Go packages into the `internal` directory.
- Rename the `restapi` package to `server` for clarity.
- Consolidate patterns and strategies into a new `data` directory.
- Group all auxiliary scripts into a new `scripts` directory.
- Move all documentation and images into a `docs` directory.
- Update all Go import paths to reflect the new structure.
- Adjust CI/CD workflows and build commands for new layout.
