- Full QWERTZ keyboard with DE and CH layout support
- Finger color mapping for all keys per spec section 8.3
- renderKeyboard, highlightKey, pressKey, updateKeyboardForLevel exports
- CSS: pulse animation for target key, press animation on keydown
- Inactive keys grayed at 0.5 opacity, active keys with finger colors
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
