final feature set

tasks/merged-waveform/09-waveform-performance-optimization.md

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+# 09. Optimize Waveform Rendering Performance
+
+meta:
+  id: merged-waveform-09
+  feature: merged-waveform
+  priority: P3
+  depends_on: [merged-waveform-08]
+  tags: [performance, optimization]
+
+objective:
+- Ensure waveform rendering doesn't cause performance issues
+- Optimize for terminal TUI environment
+- Minimize CPU and memory usage
+
+deliverables:
+- Performance optimizations
+- Memory management for waveform data
+- Performance monitoring and testing
+
+steps:
+1. Profile waveform rendering performance
+2. Optimize data point generation and updates
+3. Implement waveform data caching
+4. Add performance monitoring
+5. Test with long audio files
+
+tests:
+- Performance: Measure CPU usage during playback
+- Performance: Measure memory usage over time
+- Load test: Test with 30+ minute audio files
+
+acceptance_criteria:
+- Waveform rendering < 16ms per frame
+- No memory leaks during extended playback
+- Smooth playback even with waveform rendering
+
+validation:
+- Profile CPU usage during playback
+- Monitor memory over 30-minute playback session
+- Test with multiple simultaneous audio files
+
+notes:
+- Consider reducing waveform resolution during playback
+- Cache waveform data to avoid regeneration
+- Use efficient data structures for waveform points
+- Test on slower terminals (e.g., tmux)