{
  "schema": "NEXT11_V341_FIGURE_FOUR_RECEIVER_SECTOR_STEP2_AUDIT",
  "pass": true,
  "currentStep": "Derive Figure Four receiver sectors from existing MediaPipe/IK frames plus contact semantics.",
  "stopBoundary": "STOP BEFORE multi-grip solver execution, arm/wrist/palm solving, finger solving, or visual contact correction.",
  "receiverSchema": "NEXPROD01_TEMPORAL_RECEIVER_SECTOR_V1",
  "exactSurfaceAuthority": "existing collision cylinder",
  "longitudinalRuntimeAuthority": "existing normalized IK receiving band",
  "rows": [
    {
      "keyframe": "right_figure_four_peak",
      "gripSide": "L",
      "contactRole": "foot_ankle",
      "axis": [
        "R_Foot",
        "R_Calf"
      ],
      "sourceRecord": "left_figure_four_ankle_grab",
      "lateralWeight": -0.98621,
      "forwardWeight": -0.165499,
      "readyDistanceM": 0.594232,
      "peakDistanceM": 0.129514,
      "approachDeltaM": 0.464717,
      "approachConfirmed": true
    },
    {
      "keyframe": "right_figure_four_peak",
      "gripSide": "R",
      "contactRole": "knee_proximal_shin",
      "axis": [
        "R_Calf",
        "R_Thigh"
      ],
      "sourceRecord": "left_figure_four_ankle_grab",
      "lateralWeight": 0.031371,
      "forwardWeight": -0.999508,
      "readyDistanceM": 0.303194,
      "peakDistanceM": 0.104448,
      "approachDeltaM": 0.198746,
      "approachConfirmed": true
    },
    {
      "keyframe": "left_figure_four_peak",
      "gripSide": "R",
      "contactRole": "foot_ankle",
      "axis": [
        "L_Foot",
        "L_Calf"
      ],
      "sourceRecord": "right_figure_four_ankle_grab",
      "lateralWeight": 0.725102,
      "forwardWeight": -0.688641,
      "readyDistanceM": 0.631422,
      "peakDistanceM": 0.253745,
      "approachDeltaM": 0.377677,
      "approachConfirmed": true
    },
    {
      "keyframe": "left_figure_four_peak",
      "gripSide": "L",
      "contactRole": "knee_proximal_shin",
      "axis": [
        "L_Calf",
        "L_Thigh"
      ],
      "sourceRecord": "right_figure_four_ankle_grab",
      "lateralWeight": -0.203716,
      "forwardWeight": -0.97903,
      "readyDistanceM": 0.217398,
      "peakDistanceM": 0.127963,
      "approachDeltaM": 0.089436,
      "approachConfirmed": true
    }
  ]
}