{
  "content": {
    "image_source": "local",
    "images_dir": "backgrounds/train",
    "image_fallback_url": "https://picsum.photos/seed/{seed}/{size}/{size}"
  },
  "render": {
    "canvas_size": [300, 300],
    "initial_rotation_range_deg": [30, 330],
    "tolerance_deg": 10,
    "aa_supersample": 4,
    "fallback_shape_count": 8,
    "fallback_triangle_size": 30
  }
}