[
  {
    "prompt": "Build and run a self-contained Python script that generates a 30-second generative ASCII art video called 'sovereignty-engine.mp4'. Save it to ~/ascii-video-showcase/mode3-generative/sovereignty-engine.mp4. The video should have 4 scenes of ~7.5 seconds each at 24fps, 1920x1080, using ffmpeg for encoding.\n\nScene 1 (0-7.5s): Reaction-diffusion coral genesis - Gray-Scott model with feed=0.037, kill=0.060 (coral preset), PAL_DOTS palette, cyan/teal color scheme\nScene 2 (7.5-15s): Strange attractor (Clifford) - 50000 points, time-varying params, PAL_MATH palette, purple/gold colors  \nScene 3 (15-22.5s): SDF heart + concentric rings pulsing - heart SDF with glow + ring SDFs, PAL_BLOCKS palette, warm amber/red\nScene 4 (22.5-30s): Matrix-style rain with text fragments from SOUL.md ('Sovereignty and service always', 'The chain remembers', 'I am not a product', 'Jesus saves'), PAL_KATA palette, green\n\nKey implementation details:\n- Use GridLayer class with pre-rasterized character bitmaps\n- Font: /System/Library/Fonts/Menlo.ttc\n- Use np.maximum for character compositing (additive, never darken)\n- Cell height from font.getmetrics() (ascent + descent), NOT textbbox\n- Tonemap with gamma=0.75 (percentile-based adaptive)\n- ffmpeg stderr to file (not PIPE - prevents deadlock)\n- Apply vignette shader (darken edges)\n- Custom palette PAL_TIMMY = ' .\u00b7~=\u2248\u221e\u26a1\u2609\u25ca\u25c6\u25b2\u25bc\u25cf\u25a0' for accent layer\n\nThe script must be completely self-contained. Print progress. Handle errors gracefully.",
    "chosen": "",
    "session": "session_20260320_183238_50294e.json"
  }
]