{
  "date": "2026-10-26",
  "engine_sha256": "77f0011e4cf5a3837334cc9fbc29186c7e9770663d2823344c3005dff9eef505",
  "runs": [
    {
      "seed": 26,
      "placed": 12,
      "total": 12,
      "vertex_rms_mm": 5.348655300841339e-13,
      "max_vertex_error_mm": 1.7177839059769735e-12,
      "candidate_relations": 26,
      "cycles_checked": 15,
      "unassembled_baseline_rms_mm": 328.9031259974928,
      "corrupted_cycle_rejected": true,
      "no_relations_places_only_anchor": true,
      "record_order_control_passed": true,
      "input_sha256": "0bb499e85ed6416259feeea6736dbc3ad21dbb61fd0d5b90e0ee042a8ab37061",
      "noise_probe": {
        "sigma_mm": 0.05,
        "placed": 1,
        "total": 12
      }
    },
    {
      "seed": 41,
      "placed": 12,
      "total": 12,
      "vertex_rms_mm": 1.3262374860706472e-12,
      "max_vertex_error_mm": 3.6944737702950474e-12,
      "candidate_relations": 27,
      "cycles_checked": 16,
      "unassembled_baseline_rms_mm": 318.57028042352084,
      "corrupted_cycle_rejected": true,
      "no_relations_places_only_anchor": true,
      "record_order_control_passed": true,
      "input_sha256": "6854712976fada7e189756c9ee0958ca0fa97327af585890ffd9bc1d15afb2fc"
    },
    {
      "seed": 73,
      "placed": 12,
      "total": 12,
      "vertex_rms_mm": 1.7705489381191358e-12,
      "max_vertex_error_mm": 5.8039362912533004e-12,
      "candidate_relations": 26,
      "cycles_checked": 15,
      "unassembled_baseline_rms_mm": 327.132768276044,
      "corrupted_cycle_rejected": true,
      "no_relations_places_only_anchor": true,
      "record_order_control_passed": true,
      "input_sha256": "fac08e53be841d895751395869605b7562d1c7c8e894e5803e3aa995797d8343"
    }
  ],
  "restart_fragment_roundtrip_passed": true,
  "scope": "Synthetic surface fragments, exact shared boundaries; not archaeological scans or fracture mechanics.",
  "algorithm": "Boundary-wedge congruence, proper rigid registration, at least four coincident boundary vertices, greedy propagation and redundant-cycle checks.",
  "tolerance_mm": 1e-05
}