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    "seed": 20261013,
    "method": "uniform barycentric, triangle probability proportional to area"
  },
  "limitations": [
    "Odd frames are development validation, not an untouched final test set.",
    "Captured valid-ray recall counts repeated rays; it does not estimate full or visible surface area.",
    "Reverse distances sample fitted component shells including internal overlap faces; they are not exposed union area.",
    "Reference parts are original disconnected triangle primitives; fitted parts may use different structural grouping.",
    "Connected solids retain independent editable shells; acceptance does not claim a welded union.",
    "Fitter read scope is recorded separately; this evaluator does not establish which files an upstream process opened."
  ]
}