- Add siren selection (1-4) and auto (A) toggle buttons
- Keyboard: 1-4 select siren, 0/A auto, R ramp toggle
- Click plays to siren, Shift+click to SuperCollider
- Add RAMP toggle button
- Colored borders on nodes based on which siren is playing
- Fix label clicks to use auto (node's voice)
- Add toggle styling to cents/freq button
- Disable siren hotkeys when typing in input fields
- Disable Flask debug mode for background operation
