Repoghost

Changed
- Updated system prompt to improve summary quality and focus.
- Changed the default model to gpt-4o.

Added
- Introduced a new '--context-size' (-c) command-line argument to control the snippet size from files. The default value is 8192 and the maximum allowed is 32768. If an invalid value is provided, a friendly error message is displayed and the program exits.
- Added support for API key configuration: users can now provide their OpenAI API key via the command-line (--api-key), the OPENAI_API_KEY environment variable, or a config file at ~/.repoghostconfig.json.

Changed
- Updated build configuration and housekeeping files
- No functional changes to the package

Added
- Code snippets support in summaries
- Snippets are now stored alongside summaries in the output
- Backward compatibility for reading older cache files without snippets

Changed
- Modified summarize_chunk to return both summary and snippets
- Updated data structures to store snippets information
- Improved JSON output format to include code snippets

Added
- Initial public release
- Basic repository summarization
- Chunk-based code analysis
- Cache system for unchanged files
- Progress bar and rich console output
- OpenAI GPT-4 integration

Changed
- Moved core functionality to separate modules
- Improved error handling and logging