DrawRhythmTracks generates BPM-synced sparse track point images with
independent X/Y swing patterns (pendulum, bounce, linear). Rendering
is GPU-accelerated and compatible with LTXVDrawTracks output format.
BPMDetector extracts tempo from audio input using librosa beat tracking.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
