- New Features
- Introduce `-a` flag for autoplay mode that automatically plays the next video.
- Remove unused GUI handling (`-g`/`-r`) and update dependency comment.
- Enhancements
- Simplify flag parsing by adding `a` to `optstring` and consolidating logic.
- Replace `isGui` toggle with `autoplay` state management.
- Bug Fixes
- Fix index tracking in autoplay to correctly continue after manual selection.
- Ensure proper termination of playlists when reaching the end.