[
  {
    "prompt": "Analyze the audio file ~/Downloads/Vault of Victory (1).mp3. Report: duration, and save per-frame audio features to ~/ascii-video-showcase/vault-of-victory/features.npz. Use scipy to read wav (convert mp3->wav first via ffmpeg), compute per-frame FFT at 24fps: RMS energy, bass (20-250Hz), mid (250-4000Hz), hi (4000-20000Hz), spectral flux for beat detection. Save as numpy arrays in .npz file. Print duration, frame count, number of beats detected.",
    "chosen": "",
    "session": "session_20260320_225644_762fdc.json"
  }
]