Release v0.3.2: Automatic lyrics file reload

New Features:
- Automatic lyrics file reload when content changes
- MD5 checksum-based file change detection (checks every 2 seconds)
- No need to restart application or switch tracks when editing lyrics

Technical Changes:
- Add OpenSSL dependency for MD5 checksum calculation
- New file_utils module for file operations
- Store source file path and checksum in lyrics_data struct
- File change detection integrated into main event loop

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>