- Add 31 tests across files, config, and cache modules
- Test file operations (FileBatch, is_text_file, read_file_sample)
- Test configuration (serialization, API key validation, path expansion)
- Test caching (response retrieval, file change detection, eviction)
- Add tempfile dev dependency for test fixtures
- All tests passing with 100% success rate
- Fix home directory detection using BaseDirs from directories crate
- Add cross-platform file moving with copy+delete fallback
- Replace Unix-specific HOME env var usage
- Handle cross-filesystem moves on Windows automatically
- Add async optimization using futures for concurrent file processing
- Implement intelligent caching system with SHA256 file change detection
- Add comprehensive custom error handling for Gemini API responses
- Fix critical error handling issues throughout the codebase
- Replace fragile JSON parsing with proper struct-based deserialization
- Add automatic retry logic for rate limits and network issues
- Improve user experience with detailed error messages and progress feedback
- Add cache persistence and automatic cleanup of old entries
- Optimize performance for batch processing scenarios
