{
  "source_pdf": "edge_cases.pdf",
  "extraction_timestamp": "2026-01-01T00:00:00Z",
  "part_name": "back_panel",
  "overall_dimensions": {
    "width_mm": 600,
    "height_mm": 720,
    "depth_mm": 3
  },
  "parts": [],
  "raw_annotations": [
    "Scale: 1:1",
    "Material: 3mm HDF",
    "Note: Thin panel, handle with care"
  ]
}