{
  "slide_size_px": [1920, 1080],
  "font_policy": {
    "default_font_face": "Microsoft YaHei",
    "text_box_extra_room_pct": 12
  },
  "image_fit": "uniform_contain_only",
  "allowed_source_types": ["imagegen_asset", "api_generated_asset", "provided_asset"],
  "forbidden_media": [
    "full_slide_reference_image",
    "near_full_slide_reference_image",
    "svg_media",
    "raw_crop_asset",
    "prompt_only_asset"
  ],
  "comparison": {
    "diff_threshold": 18,
    "changed_pixel_pct_target": 0.25
  }
}
