Sebastian Krüger 6fbb677bd2 feat: implement real-time playback level monitoring for all tracks ...

Added comprehensive playback level monitoring system that shows
real-time audio levels during playback for each track.

useMultiTrackPlayer Hook:
- Added AnalyserNode for each track in audio graph
- Implemented RMS-based level calculation with requestAnimationFrame
- Added trackLevels state (Record<string, number>) tracking levels by track ID
- Insert analysers after effects chain, before master gain
- Monitor levels continuously during playback
- Clean up level monitoring on pause/stop

Audio Graph Chain:
source -> gain -> pan -> effects -> analyser -> master gain -> destination

AudioEditor Integration:
- Extract trackLevels from useMultiTrackPlayer hook
- Pass trackLevels down to TrackList component

TrackList & Track Components:
- Accept and forward trackLevels prop
- Pass playbackLevel to individual Track components
- Track component displays appropriate level:
  * Recording level (with "Input" label) when armed/recording
  * Playback level (with "Level" label) during normal playback

Visual Feedback:
- Color-coded meters: green -> yellow (70%) -> red (90%)
- Real-time percentage display
- Seamless switching between input and output modes

This completes Phase 8 (Recording) with full bidirectional level monitoring!

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

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

2025-11-18 15:01:55 +01:00

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