{
  "baseline_commit": "bf66515a",
  "source_groups": 7,
  "positive_valid_step_solids": 44,
  "connected_armature": true,
  "shared_open_rivet_axes": 28,
  "connected_smooth_rivet_envelopes": 28,
  "no_rivet_material_overlap_with_cover_armature_strips": true,
  "body_hole_axes_and_moulding_center_held": true,
  "part_checks": {
    "rear_bumper_forward_open_moulding_reference": {
      "only_removes_material_from_retained_shape_union": true,
      "bounds_difference_mm": 0.0,
      "new_connected_solids": 1
    },
    "rear_bumper_open_armature_and_mount_faces_reference": {
      "only_removes_material_from_retained_shape_union": true,
      "bounds_difference_mm": 0.0,
      "new_connected_solids": 1
    },
    "rear_bumper_upper_clamping_strip_reference": {
      "only_removes_material_from_retained_shape_union": true,
      "bounds_difference_mm": 0.0,
      "new_connected_solids": 1
    },
    "rear_bumper_lower_clamping_strip_reference": {
      "only_removes_material_from_retained_shape_union": true,
      "bounds_difference_mm": 0.0,
      "new_connected_solids": 1
    },
    "rear_bumper_left_body_stud_washer_nut_reference": {
      "unchanged_native_shape": true,
      "bounds_difference_mm": 0.0
    },
    "rear_bumper_right_body_stud_washer_nut_reference": {
      "unchanged_native_shape": true,
      "bounds_difference_mm": 0.0
    }
  },
  "unchanged_neighbor_sha256": {
    "front-bumper-reference.json": "1d43417e4a619b1a33c2726902438d7d0f4bd0b6af3ab7d2d18e22d4d670c0d2",
    "front-bumper-reference.step": "1c7edef07f300ca27d68998bbfb65cd02e0d04b590400f513f339f273743058f",
    "rear-body-mount-reference.json": "5ddd760d3c8822a2b2bf5733dae2b8ecb58630ede8eb2ace75a60f4dacae1c81",
    "rear-body-mount-reference.step": "2c9e96f0d476256f076f19f999e5ab6944c11e77528c71f3c442a20b08dab2a0",
    "boot-floor-reference.json": "ccc7e022c7e7012d5d9e16d7346cb08e0254be28abd0b84dfb89fb41a2de56d7",
    "boot-floor-reference.step": "b6479d49e8d6e75c7fd845e8bbb245f028532d3459eaf562b2047b5279de8340",
    "rear-frame-reference.json": "c2f4813d1a2f5858bb96287f36a80250ac475053f23e4fba7ef3f4ba317c8954",
    "rear-frame-reference.step": "7faac9429b261976b09612dc11f5802a8b297c4edfe6b09e5f2c6dfbcee5c980",
    "fuel-tank-reference.json": "f0e0d8179f57b505a57e0c81282ab29205d091d118ad5a8e421f1147b9f84e7a",
    "fuel-tank-reference.step": "b62b593bced34619b0fc4c5259ff8450921acaf08d4fab41e4d0219811dd641d"
  },
  "limits": "Armature web/flanges/mount faces are now fused from the retained overlapping shapes. Twenty-eight shared estimated 5.6mm passages traverse cover, strips and armature; smooth 5mm rivet envelopes extend through the stack to a 0.5mm display gap at the retained cover exterior. Passage/head/shank sizes, pitch and display gap are construction estimates, not a drilling or rivet-setting specification. All contours, moulding thickness, sections, rivet spacing, mounts, fasteners, apertures and body poses are estimates. BHM539/CHA244/CHA536 comparisons do not identify fitted parts. The 28-rivet and four-body-fixing counts are catalog topology, not an owner hardware count. The new source center Z=-2.18 body units is a provisional assembly station, not measured stand-off, overall length or verified body clearance. Existing rear panel/tank/suspension frames stay fixed and remain unregistered. No front spring/support arrangement, pre-GAN6 reinforcement or except-North-America number-plate bracket is imposed. No strength, impact, towing/lifting, clamp preload, rivet removal/reuse, safe support or verified replacement/removal path. Inspection separation is illustrative."
}