Added comprehensive master output level monitoring: - Created MasterMeter component with dual vertical bars (peak + RMS) - Implemented real-time level monitoring in useMultiTrackPlayer hook - Added master analyser node connected to audio output - Displays color-coded levels (green/yellow/red) based on dB thresholds - Shows numerical dB readouts for both peak and RMS - Includes clickable clip indicator with reset functionality - Integrated into PlaybackControls next to master volume 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>