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  "observation_parameters": {
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  "smoothing_weight": 0.3,
  "optimizer_success": true,
  "estimated_retained_centerline_length_mm": 121.62000018375142,
  "estimated_minimum_centerline_radius_mm": 24.694471971984477,
  "open_boundary_mm": [
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  "drawing_constraints": "First pole[-107,109,123] and +Z initial tangent held at the previous wrapping front plane. Six poles, cubic spline; primary-view parameterization fixed by image arc length, secondary-view samples slide independently with monotonic ordering. Weak second-difference smoothing and broad search bounds regularize the depth. No measured lengths or hose endpoints are imposed.",
  "classification": "Conditional photo-curve construction; no owner dimensions or fitted tolerance.",
  "source_sha256": {
    "bay-photo-reconstruction.json": "5a061a03e42dac0f4177018f65cc476c4e6fd40d6457220630323c22baa60c93",
    "bay-engine-landmarks.json": "9f6e60c49b75c22cde577566e347c94f0f195c7722cd29fad0ee94d9e089d4b8",
    "rocker-breather-photo-evidence.json": "578fa121696568fbbc14f3f346b395172b4bc9fac9e7fc06843681b32b655fc2"
  },
  "limits": "Existing cameras and engine similarity depend on unmeasured152mm stud spacing and interpreted cap-face orientation. Manual centerline picks, foreshortening, occlusion and smoothing limit the result. Reprojection error is image agreement, not positional accuracy. The far boundary stops at the shortest three-view coverage; the initial wrap-plane connection is held construction. The remaining curl, hidden carburetor seat, port identity, complete remote circuit, replacement length, thermal/loaded clearance and removal path remain unverified. The inherited17mm outside diameter and7/16-inch bore remain estimates/comparisons. No nearby component is moved to manufacture clearance.",
  "smoothing_sensitivity_max_native_mm": {
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    "0.6": 2.9640340343878564
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}
