{
  "round": 3,
  "transfer_project": {
    "title": "Household Shelf Extrusion Transfer",
    "goal": "Apply extrusion logic to create a valid solid for a bookshelf design using harmless household materials.",
    "inputs": [
      {"type": "vector_2d", "name": "base_profile"},
      {"type": "scalar", "name": "extrusion_distance"}
    ],
    "steps": [
      "Define the base profile with explicit origin, axes, and units in millimeters.",
      "Extrude the constrained geometry along a specified axis to form a closed solid.",
      "Validate that all faces are manifold and normals point outward without self-intersection."
    ],
    "outputs": [
      {"type": "solid_mesh", "name": "shelf_geometry"},
      {"type": "boolean_flag", "name": "validity_check"}
    ],
    "acceptance_criteria": [
      "The output solid must have exactly zero non-manifold edges and no self-intersecting faces.",
      "All face normals must be consistently outward-facing relative to the defined coordinate system."
    ]
  },
  "boundary_cases": {
    "minimum": {"value": 1.0, "unit": "mm", "description": "Minimum extrusion distance ensuring a closed volume exists."},
    "nominal": {"value": 50.0, "unit": "mm", "description": "Standard design length for typical household shelving units."},
    "maximum": {"value": 200.0, "unit": "mm", "description": "Upper limit before structural instability or material failure risks arise."},
    "invalid": {"value": -10.0, "unit": "mm", "description": "Negative distance resulting in geometric collapse and non-manifold surfaces."}
  },
  "provenance_review": {
    "licence_status": "unknown",
    "decision": "quarantine",
    "commercial_use": "blocked",
    "reason": "Source material lacks verifiable licensing history, preventing any commercial deployment or public release of generated designs."
  },
  "safety_gate": {
    "risk_class": "low",
    "action": "continue",
    "forge_execution_allowed": false,
    "reason": "Design remains theoretical and safe for conceptual study only; no physical execution tools are permitted due to unknown provenance."
  },
  "limitations": [
    "Output geometry cannot be physically manufactured without external CAD software integration.",
    "No commercial rights or release authority exists for the generated design data."
  ]
}