[
  {
    "semantic_unit_id": "domain_icon_01",
    "source_type": "imagegen_asset",
    "asset_path": "assets/domain_icon_01.png",
    "semantic_unit_count": 1,
    "generated_grid": "generated/domain_icons_grid.png",
    "grid_cell": [0, 0],
    "prompt_id": "domain_icons_grid_01",
    "source_reference": "reference/page-01.png",
    "placement_rule": "uniform contain scaling; no one-axis stretch"
  },
  {
    "semantic_unit_id": "workflow_arrow_01",
    "source_type": "imagegen_asset",
    "asset_path": "assets/workflow_arrow_01.png",
    "semantic_unit_count": 1,
    "generated_grid": "generated/workflow_arrows_grid.png",
    "grid_cell": [0, 1],
    "prompt_id": "workflow_arrows_grid_01",
    "source_reference": "reference/page-01.png",
    "placement_rule": "uniform contain scaling; no one-axis stretch"
  }
]
