{
  "schema": "front-mount-orientation-validation-v1",
  "baseline_commit": "d81cf8d2",
  "scope": "Reference orientation/connected support chain; not fitted dimensions, loaded support, access or a replacement procedure.",
  "source_groups": 7,
  "valid_positive_step_solids": 33,
  "original_central_plate_profile_and_holes_held": true,
  "engine_body_transform_held": true,
  "side_checks": {
    "left": {
      "rubber_and_faces_rigid_rotation_symmetric_difference_mm3": 0.0,
      "mount_center_held": true,
      "frame_foot_axes_held": true,
      "local_vertical_passages_open": true,
      "engine_foot_material_witness": true,
      "connected_body_bracket": true
    },
    "right": {
      "rubber_and_faces_rigid_rotation_symmetric_difference_mm3": 0.0,
      "mount_center_held": true,
      "frame_foot_axes_held": true,
      "local_vertical_passages_open": true,
      "engine_foot_material_witness": true,
      "connected_body_bracket": true
    }
  },
  "local_stack_contacts_mm3": {
    "left_plate__rubber": 0.0,
    "left_bracket__rubber": 0.0,
    "right_plate__rubber": 0.0,
    "right_bracket__rubber": 0.0
  },
  "source_neighbor_contacts_mm3": {
    "front_left_frame_bracket_comparison__front_structure_left_damper_platform_web_comparison": 4184.23106,
    "front_left_rubber_and_bonded_face_comparison__steering_column_retained_axis_smooth_shaft": 7862.98589,
    "front_left_rubber_and_bonded_face_comparison__front_structure_left_damper_platform_web_comparison": 9627.36183,
    "front_right_frame_bracket_comparison__front_structure_right_damper_platform_web_comparison": 4236.22015,
    "front_right_rubber_and_bonded_face_comparison__front_structure_right_damper_platform_web_comparison": 9627.36183,
    "front_engine_plate_with_integral_bent_mounting_tabs_comparison__alternator_photo_reference_provisional": 4750.31436,
    "front_engine_plate_with_integral_bent_mounting_tabs_comparison__steering_column_retained_axis_smooth_shaft": 1251.84911,
    "front_engine_plate_with_integral_bent_mounting_tabs_comparison__front_structure_left_damper_platform_web_comparison": 2193.544,
    "front_engine_plate_with_integral_bent_mounting_tabs_comparison__front_structure_right_damper_platform_web_comparison": 2193.544
  },
  "held_source_sha256": {
    "midget-1500-measured-core.json": "3e2577e1688663a6ea3a985091fc8a35bea6d5054514cafac4562973c741cc9e",
    "midget-1500-measured-core.step": "05849788af49defc430885ffedac66589fea076e2c7581197aff29780fed0a39",
    "steering-rack-reference.json": "8422f6fad064fabc2d1fedf9887135b1e5e2632e76087cb00efdff119194ab3b",
    "steering-rack-reference.step": "6d2f3eb033a4fa695ae1ab21da44cf30c4dcc895d160106198a06de654b61e73",
    "front-structure-reference.json": "e4d9a50449ef1d5e68d98949f675da258221a3953ab759821a6a62cf5e83553b",
    "front-structure-reference.step": "37d8dd6b43212f75f27f2996d5203070c8b15cc93909df30bd1ee7950bab5052",
    "front-wheelhouse-reference.json": "4349ceaaea65bed49be123e680bbfacbff8627302a0303cedd483fd8095cecb2",
    "front-wheelhouse-reference.step": "aec714cb069d6368e9e70ba574dc79af9076794261f3e3223ef3fb5817d337f2",
    "rear-power-support-reference.json": "336cce212478675f295870a35b1027e788ae212fd73aa87b000ed6d7cce0d1cc",
    "rear-power-support-reference.step": "5e8dc7b847f532818d6ee1497d33b4b4fff3083d21439b585c899ea8dacd387e",
    "heater-return-reference.json": "f5c42c73b05d6b1dd6c7aec872c57275646173d15092b029b0fba15ba71c4ca5",
    "heater-return-reference.step": "844d906efb32cbbef2e2de0890a1f2a2c34865f8b6a1143cd6c6d53249a14ce6"
  },
  "source_sha256": {
    "front-power-support-reference.json": "bf3a72a24bf7ae334c685c7aa5d6743881d73e49da21684af1bf70eb764b98b4",
    "front-power-support-reference.step": "33883196ea776d2e9a5ff2308abdc7ec6c5261e652a9ae6056a4425a5c43a46b"
  },
  "limits": "No direct owner dimensions, selected CHA280/565 or215372/TKC1830 identity, exact installed angles or loaded rubber shape. Reused rubber/face dimensions rotate as reference envelopes;3mm bracket/foot gauges,6mm bend radii, web outlines, bore maps, plain fixings and every station remain estimates. Source bearing-plane coincidence is construction, not fitted support, compression, thread engagement or strength. The opposite-side form follows factory architecture without an owner survey. Original engine front plate and engine/body frame stay. No body/frame hole or receiver is invented. Actual filter/alternator/rack/column clearances, torque, supported lift, tool access, NA restraints/cable/tie-bar and verified release/removal paths remain unresolved. UK12.45.01/.03 are documentary comparisons, not a complete applicable North American procedure. Separating shapes is illustrative.",
  "browser_validation": {
    "nativeMountMeshes": 7,
    "finiteVertices": 30448,
    "heldSurroundingMeshSamples": 1563,
    "sourceMappingPickingAndMetricPlacement": true,
    "allNativeSourceStatusesReady": 74,
    "productionMountSelection": true,
    "productionReloadWithoutHooks": true,
    "pageErrors": [],
    "two_study_images_loaded": true,
    "native_downloads": true,
    "mobile_overflow": false,
    "production_all_74_sources_ready_without_hooks": true,
    "preview_transport_note": "Final production reload used a local HTTP server with a128-connection queue. The older preview intermittently dropped unrelated concurrent asset requests; source files were unchanged."
  }
}