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      "f": 33,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 34,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 35,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 36,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 37,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 38,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 39,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 40,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 41,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 42,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 43,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 44,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 45,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 46,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 47,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 48,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 49,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 50,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 51,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 52,
      "kind": "K",
      "note": "Low hold ends; rider starts rising."
    },
    {
      "f": 53,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 54,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 55,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 56,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 57,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 58,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 59,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 60,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 61,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 62,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 63,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 64,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 65,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 66,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 67,
      "kind": "K",
      "note": "Left end rises through the middle of its travel."
    },
    {
      "f": 68,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 69,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 70,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 71,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 72,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 73,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 74,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 75,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 76,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 77,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 78,
      "kind": "K",
      "note": "Rider rises into view."
    },
    {
      "f": 79,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 80,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 81,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 82,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 83,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 84,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 85,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 86,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 87,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 88,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 89,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 90,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 91,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 92,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 93,
      "kind": "K",
      "note": "Near highest observed position."
    },
    {
      "f": 94,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 95,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 96,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 97,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 98,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 99,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 100,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 101,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 102,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 103,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 104,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 105,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 106,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 107,
      "kind": "K",
      "note": "High reversal and brief hold."
    },
    {
      "f": 108,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 109,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 110,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 111,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 112,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 113,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 114,
      "kind": "H",
      "note": "Held low source pose."
    },
    {
      "f": 115,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 116,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 117,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 118,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 119,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 120,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 121,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 122,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 123,
      "kind": "K",
      "note": "Left end begins descending."
    },
    {
      "f": 124,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 125,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 126,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 127,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 128,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 129,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 130,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 131,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 132,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 133,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 134,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 135,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 136,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 137,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 138,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 139,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 140,
      "kind": "K",
      "note": "Mid descent."
    },
    {
      "f": 141,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 142,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 143,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 144,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 145,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 146,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 147,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 148,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 149,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 150,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 151,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 152,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 153,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 154,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 155,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 156,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 157,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 158,
      "kind": "B",
      "note": "In-between source-observed angle anchors."
    },
    {
      "f": 159,
      "kind": "K",
      "note": "Low return, rider again partly occluded."
    }
  ],
  "source_angle_observations": [
    {
      "time": 9.45,
      "angle_degrees": 30
    },
    {
      "time": 10.5,
      "angle_degrees": 30
    },
    {
      "time": 11.6,
      "angle_degrees": 29
    },
    {
      "time": 12.05,
      "angle_degrees": 25
    },
    {
      "time": 12.4,
      "angle_degrees": 11
    },
    {
      "time": 12.7,
      "angle_degrees": 0
    },
    {
      "time": 13.05,
      "angle_degrees": -10
    },
    {
      "time": 13.35,
      "angle_degrees": -14
    },
    {
      "time": 13.75,
      "angle_degrees": -18
    },
    {
      "time": 14.2,
      "angle_degrees": -19
    },
    {
      "time": 14.65,
      "angle_degrees": -17
    },
    {
      "time": 15.0,
      "angle_degrees": -8
    },
    {
      "time": 15.3,
      "angle_degrees": 3
    },
    {
      "time": 15.65,
      "angle_degrees": 20
    },
    {
      "time": 16.1,
      "angle_degrees": 29
    }
  ],
  "rig": {
    "original_doodle_strokes": [
      [
        [
          80,
          80
        ],
        [
          33,
          33
        ]
      ],
      [
        [
          51,
          189,
          246,
          255,
          226,
          194,
          154,
          116,
          50,
          0,
          14,
          65
        ],
        [
          0,
          108,
          157,
          169,
          193,
          178,
          152,
          118,
          46,
          12,
          7,
          3
        ]
      ],
      [
        [
          88,
          89
        ],
        [
          123,
          121
        ]
      ],
      [
        [
          71,
          85,
          93,
          97,
          127,
          133,
          148,
          100,
          74,
          103,
          129
        ],
        [
          195,
          167,
          123,
          117,
          157,
          175,
          201,
          199,
          193,
          119,
          189
        ]
      ]
    ],
    "foreground_actor": {
      "foot_anchors": [
        [
          13,
          209
        ],
        [
          32,
          197
        ]
      ],
      "leg_lengths": [
        [
          27,
          29
        ],
        [
          25,
          27
        ]
      ],
      "method": "Keyed waist/shoulder positions, attached neck, two-bone leg IK with fixed ankles; source contact intervals unmeasured"
    },
    "pivot": [
      151.0,
      155.0
    ],
    "board_half_length_world_units": 112.0,
    "rigid_length_world_units": 224.0,
    "projection_horizontal_depth_axis": [
      0.94,
      0.2
    ],
    "projection_vertical_axis": [
      0.0,
      -0.8
    ],
    "method": "Original plank points expressed in one board-local coordinate system, then projected under a single source-keyed 3D hinge angle; no unmatched-stroke morph."
  },
  "camera": {
    "type": "held",
    "method": "Manual source inspection; no camera movement inferred"
  },
  "planes": [
    {
      "id": "wooded_background",
      "source": "drawn by agent once against source"
    },
    {
      "id": "rear_equipment_and_riders",
      "source": "drawn by agent as held observed context"
    },
    {
      "id": "selected_board",
      "source_strokes": [
        0,
        1,
        2,
        3
      ],
      "source": "Original QuickDraw four strokes with one fixed support and one rigid hinged plank"
    },
    {
      "id": "selected_rider",
      "source": "drawn by agent against source seat/head/leg relationships"
    },
    {
      "id": "foreground_occluder",
      "source": "nearer parallel board drawn once; foreground child straightening keyed from source with fixed foot anchors"
    }
  ],
  "assembly_summary": "A rigid hinged plank lifts its rider, pauses near the observed high reversal, and returns. One wooded setting and parallel equipment remain held; nearer context occludes the low rider.",
  "training_ran": false,
  "motion_approved": false,
  "train_eligible": false,
  "sam": "Available but combines distinct boards; not a valid single-instance fit target.",
  "review_status": "rider_seat_pose_repair_pending",
  "review_note": "High rider pose still needs a clearer seated hip and bent knees; motion unapproved.",
  "review_badge": "RIDER SEATED POSE NEEDS REPAIR",
  "independent_review": "review-v3.json"
}