## CHANGES
- Extract token retrieval into `util.GetTokenFromEnv` function
- Support both `GITHUB_TOKEN` and `GH_TOKEN` environment variables
- Replace direct `os.Getenv` calls with utility function
- Add new `util/token.go` file for token handling
- Update walker.go to use centralized token logic
- Update main.go to use token utility function
## CHANGES
- Add `--release` flag to command line options documentation
- Enable AI summary updates for GitHub releases
- Support version-specific release description updates
- Reorder internal package imports for consistency
### CHANGES
- Add `--release` flag to generate_changelog to update GitHub release
- Implement `ReleaseManager` for managing release descriptions
- Create `release.go` for handling release updates
- Update `release.yml` to run changelog generation
- Ensure mutual exclusivity for `--release` with other flags
- Modify `Config` struct to include `Release` field
- Update `main.go` to handle new release functionality
## CHANGES
- Update documentation examples to use gemini-2.5-flash-preview-tts
- Replace gemini-2.0-flash-tts references throughout Gemini-TTS.md
- Update voice selection example commands
- Modify CLI help text example command
- Update changelog database binary file
## CHANGES
- Replace deprecated generative-ai-go with google.golang.org/genai library
- Add TTS model detection and audio output validation
- Implement WAV file generation for TTS audio responses
- Add audio format checking utilities in CLI output
- Update Gemini client to support streaming with new SDK
- Add "Kore" and "subchunk" to VSCode spell checker dictionary
- Remove extra blank line from changelog formatting
- Update dependency imports and remove unused packages
## CHANGES
- Add actual error details to date parsing failure message
- Include error variable in stderr output formatting
- Enhance debugging information for invalid date formats
## CHANGES
- Replace emoji prefixes with bracketed text labels
- Standardize synchronization step logging format across methods
- Simplify version existence check error message text
- Update commit author email extraction comment clarity
- Maintain consistent stderr output formatting throughout sync process
## CHANGES
- Remove unused runtime import from processing.go
- Simplify date parsing error messages in cache
- Replace global merge pattern variables with struct
- Use sync.Once for thread-safe pattern initialization
- Remove OS-specific file deletion instructions from errors
- Clean up merge commit detection function documentation
- Eliminate redundant error variable in date parsing
## CHANGES
- Capture first RFC3339Nano parsing error for better diagnostics
- Display both RFC3339Nano and RFC3339 errors in output
- Extract merge patterns to variable for cleaner code
- Improve error message clarity in date parsing failures
## CHANGES
- Import runtime package for OS detection
- Add Windows-specific file deletion commands in error messages
- Provide both Command Prompt and PowerShell alternatives
- Maintain existing Unix/Linux rm command for non-Windows systems
- Improve user experience across different operating systems
## CHANGES
- Add sync package import for concurrency safety
- Implement lazy initialization for merge patterns using sync.Once
- Wrap merge patterns in getMergePatterns function
- Replace direct mergePatterns access with function call
- Ensure thread-safe pattern compilation on first use
