Major improvements to preset group functionality:
- Replace timer-based cycling with accurate note counting via pattern_step signal
- Group cycling now counts actual notes played (pattern_length × loop_count)
- Add GUI scaling support for dynamic button sizing on different resolutions
- Implement complete preset group UI with add/remove, manual controls, and status
- Add master file save/load functionality for preset groups
- Fix scale_note_start not saving in presets
- Update button styling across all controls for consistency
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
melancholytron