fix: btn-icon touch targets to 44px WCGA minimum
- CSS classes: index.css (28→44px base, 24→44px mobile), App.jsx (36→44px base, 24→44px narrow)
- 19 inline btn-icon buttons in App.jsx: param view toggle, CapturesScreen/Presets close, sidebar toggle, undo/redo, status bar nav (captures/presets/tuner/fullscreen/menu), overlay closes, global bypass toggle, block bypass toggle, Scan/ON buttons, add block close
- Footswitch mode SM/PR buttons: height 20→44px, minWidth 34→44px
- FocusView.jsx: param −/+ buttons 34→44px, close button 34→44px
- GlobalSettings.jsx: param −/+ buttons 26→44px, close button 34→44px
- border-radius bumped from 7→8px (base), 5→8px (index.css) for proportion
shawn
3dcf31f600