- Refactor logger package to use Go's slog for JSON-structured logs
- Add configurable log levels (debug, info, warn, error) via config and flags
- Integrate logging across commands, git operations, and API client with metrics like timing and sizes
- Update README with logging documentation and usage examples
- Add global --debug and --verbose flags
- Enhance tests for logger initialization, levels, and structured output
- Add Gitea CI workflow for testing, linting, and building
- Add release workflow for multi-platform builds and GitHub releases
- Implement persistent chat history with JSON storage
- Add shell completion generation for bash, zsh, fish, powershell
- Introduce custom error types and logging system
- Add interfaces for git and AI client for better testability
- Enhance config with temperature and timeout settings
- Add comprehensive unit tests for config, errors, git, grok, and logger
- Update README with installation, features, and development instructions
- Make model flag persistent across commands
- Add context timeouts to API requests
