- Replace custom error handling with xerrors package
- Enhance error descriptions for better debugging
- Add text utilities for string processing
- Update error tests to use standard errors package
- Add String() method to GeminiError
- Replace zerolog with Go's standard slog package
- Add ColorHandler for terminal color output
- Add context-aware logging system
- Format attributes on the same line as log messages
- Use green color for INFO level logs
- Set up context value extraction helpers
