fix: add missing onUpdateTrack prop to Track component

Fixed "onUpdateTrack is not defined" error by:
- Added onUpdateTrack to TrackProps interface
- Added onUpdateTrack to Track component destructuring
- Passed onUpdateTrack prop from TrackList to Track

This prop is required for:
- Track height resizing functionality
- Automation lane updates
- General track property updates

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

components/tracks/Track.tsx

@@ -30,6 +30,7 @@ export interface TrackProps {
   onPanChange: (pan: number) => void;
   onRemove: () => void;
   onNameChange: (name: string) => void;
+  onUpdateTrack: (trackId: string, updates: Partial<TrackType>) => void;
   onSeek?: (time: number) => void;
   onLoadAudio?: (buffer: AudioBuffer) => void;
   onToggleEffect?: (effectId: string) => void;
@@ -57,6 +58,7 @@ export function Track({
   onPanChange,
   onRemove,
   onNameChange,
+  onUpdateTrack,
   onSeek,
   onLoadAudio,
   onToggleEffect,

components/tracks/TrackList.tsx

@@ -114,6 +114,7 @@ export function TrackList({
             onNameChange={(name) =>
               onUpdateTrack(track.id, { name })
             }
+            onUpdateTrack={onUpdateTrack}
             onSeek={onSeek}
             onLoadAudio={(buffer) =>
               onUpdateTrack(track.id, { audioBuffer: buffer })