{
  "boundary_cases": {
    "invalid": "{\"condition\": \"negative_distance_or_zero_volume\", \"reason\": \"Extrusion distance must be strictly positive to generate a valid closed solid; zero results in no volume.\"}",
    "maximum": "{\"value\": 200.0, \"unit\": \"mm\", \"description\": \"Maximum safe dimension before structural instability or tool limits are reached.\"}",
    "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 the household shelf component.\"}"
  },
  "limitations": [
    "The transfer project does not include a detailed description of the material properties or manufacturing constraints.",
    "The boundary cases do not include a detailed description of the material properties or manufacturing constraints."
  ],
  "provenance_review": {
    "commercial_use": "blocked",
    "decision": "quarantine",
    "licence_status": "unknown",
    "reason": "The skill data does not provide sufficient licensing information to determine appropriate use."
  },
  "round": 3,
  "safety_gate": {
    "action": "continue",
    "forge_execution_allowed": false,
    "reason": "Low risk of tool execution or forge execution; execution is allowed but monitored.",
    "risk_class": "low"
  },
  "transfer_project": {
    "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."
    ],
    "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\"}"
    ],
    "outputs": [
      "{\"type\": \"solid_mesh\", \"name\": \"shelf_geometry\"}",
      "{\"type\": \"boolean_flag\", \"name\": \"validity_check\"}"
    ],
    "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."
    ],
    "title": "Household Shelf Extrusion Transfer"
  }
}