{
  "core_fields": [
    "id",
    "factory",
    "category",
    "split",
    "parameters",
    "seed",
    "units",
    "coordinates",
    "part_ids",
    "caption_en",
    "caption_zh",
    "glb_path",
    "blend_path",
    "source_path",
    "request_path",
    "preview_paths",
    "historical_quality_path",
    "current_quality_path",
    "manifest_sha256",
    "glb_sha256",
    "technical_pass",
    "independent_ai_visual_pass",
    "assembly_contract_pass",
    "strict_all_surfaces_disjoint",
    "human_certification"
  ],
  "editable_scene": "Blender .blend",
  "geometry": "GLB",
  "images": {
    "count_per_asset": 6,
    "format": "PNG",
    "height": 320,
    "width": 320
  },
  "metadata_format": "JSON/JSONL",
  "parameters_representation": "JSON-encoded string in JSONL to keep Arrow schema consistent across factory-disjoint splits; original object in metadata/instances.json and per-asset source/request.json",
  "quality_precedence": "metadata/current-qualification.json supplements immutable per-asset quality.json snapshots",
  "record_unit": "one3Dasset",
  "schema_version": 1,
  "source": "Blender Python",
  "units": "metres"
}