- Make velocity static while channel volume (CC7) controls brightness
- Set volume once per note-on instead of constant updates to reduce MIDI traffic
- Fix note speed buttons to work with immediate changes (no armed state needed)
- Optimize volume changes to only affect channels with active notes
- Add visual dimming for inactive channels when notes end
- Remove conflicting volume update systems for cleaner implementation
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Co-Authored-By: Claude <noreply@anthropic.com>