{
  "version": "rc39-limb-intent-mediapipe-ready",
  "intent": "Bind skeleton and images through named hands/feet anchors; prepare a safe MediaPipe extraction target without changing runtime architecture.",
  "spriteRuntimeLandmarksUpdated": 288,
  "mediaPipeStubCount": 288,
  "sequenceEntriesWithLimbIntent": 136,
  "sequenceEntriesChangedThisRun": 0,
  "mediaPipeBrowserTool": "tools/mediapipe_pose_extract_browser.html",
  "qaImages": [
    "qa_screenshots/rc39_limb_binding_contact_map.jpg",
    "qa_screenshots/rc39_sequence_anchor_trace_lateral_line_hops.jpg"
  ],
  "notes": [
    "MediaPipe itself was not executed in this sandbox because the mediapipe/tasks-vision model package is not locally installed and the sandbox cannot fetch model assets.",
    "Runtime now has explicit per-sequence limbIntent and per-sprite dominantContactFoot, so path anchoring should no longer choose a random bottom pixel.",
    "The existing pose-motion-service remains the single runtime motion engine; no parallel animation system was introduced."
  ],
  "sequenceEdits": [],
  "sampleSpriteItems": [
    {
      "poseKey": "sheet_01_ready_reset__pose01",
      "athleteId": "athlete-a",
      "status": "runtime-landmarks-v2",
      "contactSide": "both",
      "dominantFootName": "footCenter",
      "leftFoot": {
        "x": 26.87,
        "y": 99.52,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 74.63,
        "y": 99.36,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 50.75,
        "y": 99.52,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_01_ready_reset__pose01",
      "athleteId": "athlete-b",
      "status": "runtime-landmarks-v2",
      "contactSide": "both",
      "dominantFootName": "footCenter",
      "leftFoot": {
        "x": 26.8,
        "y": 99.51,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 75.6,
        "y": 99.51,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 51.2,
        "y": 99.51,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_01_ready_reset__pose02",
      "athleteId": "athlete-a",
      "status": "runtime-landmarks-v2",
      "contactSide": "both",
      "dominantFootName": "footCenter",
      "leftFoot": {
        "x": 17.23,
        "y": 99.51,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 85.14,
        "y": 99.46,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 51.18,
        "y": 99.51,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_01_ready_reset__pose02",
      "athleteId": "athlete-b",
      "status": "runtime-landmarks-v2",
      "contactSide": "both",
      "dominantFootName": "footCenter",
      "leftFoot": {
        "x": 47.34,
        "y": 99.28,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 50.89,
        "y": 99.28,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 49.11,
        "y": 99.28,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_01_ready_reset__pose03",
      "athleteId": "athlete-a",
      "status": "runtime-landmarks-v2",
      "contactSide": "both",
      "dominantFootName": "footCenter",
      "leftFoot": {
        "x": 16.59,
        "y": 99.5,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 89.51,
        "y": 99.34,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 53.05,
        "y": 99.5,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_01_ready_reset__pose03",
      "athleteId": "athlete-b",
      "status": "runtime-landmarks-v2",
      "contactSide": "both",
      "dominantFootName": "footCenter",
      "leftFoot": {
        "x": 51.32,
        "y": 94.95,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 53.42,
        "y": 94.95,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 52.37,
        "y": 94.95,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_01_ready_reset__pose04",
      "athleteId": "athlete-a",
      "status": "runtime-landmarks-v2",
      "contactSide": "both",
      "dominantFootName": "footCenter",
      "leftFoot": {
        "x": 19.39,
        "y": 99.51,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 87.58,
        "y": 99.35,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 53.48,
        "y": 99.51,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_01_ready_reset__pose04",
      "athleteId": "athlete-b",
      "status": "runtime-landmarks-v2",
      "contactSide": "visualLeft",
      "dominantFootName": "leftFoot",
      "leftFoot": {
        "x": 34.78,
        "y": 96.01,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 42.47,
        "y": 86.31,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 34.78,
        "y": 96.01,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_01_ready_reset__pose05",
      "athleteId": "athlete-a",
      "status": "runtime-landmarks-v2",
      "contactSide": "both",
      "dominantFootName": "footCenter",
      "leftFoot": {
        "x": 41.86,
        "y": 99.47,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 48.45,
        "y": 99.47,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 45.16,
        "y": 99.47,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_01_ready_reset__pose05",
      "athleteId": "athlete-b",
      "status": "runtime-landmarks-v2",
      "contactSide": "both",
      "dominantFootName": "footCenter",
      "leftFoot": {
        "x": 41.11,
        "y": 87.69,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 43.96,
        "y": 87.69,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 42.53,
        "y": 87.69,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_01_ready_reset__pose06",
      "athleteId": "athlete-a",
      "status": "runtime-landmarks-v2",
      "contactSide": "both",
      "dominantFootName": "footCenter",
      "leftFoot": {
        "x": 37.4,
        "y": 99.46,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 46.56,
        "y": 99.46,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 41.98,
        "y": 99.46,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_01_ready_reset__pose06",
      "athleteId": "athlete-b",
      "status": "runtime-landmarks-v2",
      "contactSide": "both",
      "dominantFootName": "footCenter",
      "leftFoot": {
        "x": 38.57,
        "y": 93.73,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 43.93,
        "y": 92.48,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 41.25,
        "y": 93.73,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_01_ready_reset__pose07",
      "athleteId": "athlete-a",
      "status": "runtime-landmarks-v2",
      "contactSide": "both",
      "dominantFootName": "footCenter",
      "leftFoot": {
        "x": 22.0,
        "y": 97.97,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 81.8,
        "y": 99.32,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 51.9,
        "y": 99.32,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_01_ready_reset__pose07",
      "athleteId": "athlete-b",
      "status": "runtime-landmarks-v2",
      "contactSide": "both",
      "dominantFootName": "footCenter",
      "leftFoot": {
        "x": 51.89,
        "y": 94.04,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 54.32,
        "y": 93.78,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 53.11,
        "y": 94.04,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_01_ready_reset__pose08",
      "athleteId": "athlete-a",
      "status": "runtime-landmarks-v2",
      "contactSide": "both",
      "dominantFootName": "footCenter",
      "leftFoot": {
        "x": 18.1,
        "y": 98.63,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 86.21,
        "y": 99.48,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 52.16,
        "y": 99.48,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_01_ready_reset__pose08",
      "athleteId": "athlete-b",
      "status": "runtime-landmarks-v2",
      "contactSide": "both",
      "dominantFootName": "footCenter",
      "leftFoot": {
        "x": 50.0,
        "y": 94.09,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 51.72,
        "y": 93.85,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 50.86,
        "y": 94.09,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_01_ready_reset__pose09",
      "athleteId": "athlete-a",
      "status": "runtime-landmarks-v2",
      "contactSide": "both",
      "dominantFootName": "footCenter",
      "leftFoot": {
        "x": 42.86,
        "y": 95.51,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 50.0,
        "y": 94.85,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 46.43,
        "y": 95.51,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_01_ready_reset__pose09",
      "athleteId": "athlete-b",
      "status": "runtime-landmarks-v2",
      "contactSide": "both",
      "dominantFootName": "footCenter",
      "leftFoot": {
        "x": 47.13,
        "y": 95.31,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 51.15,
        "y": 95.49,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 49.14,
        "y": 95.49,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_01_ready_reset__pose10",
      "athleteId": "athlete-a",
      "status": "runtime-landmarks-v2",
      "contactSide": "visualRight",
      "dominantFootName": "rightFoot",
      "leftFoot": {
        "x": 15.68,
        "y": 91.86,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 88.38,
        "y": 95.35,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 88.38,
        "y": 95.35,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_01_ready_reset__pose10",
      "athleteId": "athlete-b",
      "status": "runtime-landmarks-v2",
      "contactSide": "both",
      "dominantFootName": "footCenter",
      "leftFoot": {
        "x": 52.12,
        "y": 95.1,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 56.06,
        "y": 95.1,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 54.09,
        "y": 95.1,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_01_ready_reset__pose11",
      "athleteId": "athlete-a",
      "status": "runtime-landmarks-v2",
      "contactSide": "visualRight",
      "dominantFootName": "rightFoot",
      "leftFoot": {
        "x": 22.13,
        "y": 94.19,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 75.0,
        "y": 95.97,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 75.0,
        "y": 95.97,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_01_ready_reset__pose11",
      "athleteId": "athlete-b",
      "status": "runtime-landmarks-v2",
      "contactSide": "visualRight",
      "dominantFootName": "rightFoot",
      "leftFoot": {
        "x": 42.59,
        "y": 92.86,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 82.72,
        "y": 95.6,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 82.72,
        "y": 95.6,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_01_ready_reset__pose12",
      "athleteId": "athlete-a",
      "status": "runtime-landmarks-v2",
      "contactSide": "both",
      "dominantFootName": "footCenter",
      "leftFoot": {
        "x": 19.67,
        "y": 94.35,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 69.0,
        "y": 95.97,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 44.33,
        "y": 95.97,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_01_ready_reset__pose12",
      "athleteId": "athlete-b",
      "status": "runtime-landmarks-v2",
      "contactSide": "visualRight",
      "dominantFootName": "rightFoot",
      "leftFoot": {
        "x": 22.44,
        "y": 92.33,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 71.06,
        "y": 95.64,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 71.06,
        "y": 95.64,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_02_squat_lunge__pose01",
      "athleteId": "athlete-a",
      "status": "runtime-landmarks-v2",
      "contactSide": "both",
      "dominantFootName": "footCenter",
      "leftFoot": {
        "x": 21.77,
        "y": 98.71,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 74.6,
        "y": 99.35,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 48.19,
        "y": 99.35,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_02_squat_lunge__pose01",
      "athleteId": "athlete-b",
      "status": "runtime-landmarks-v2",
      "contactSide": "both",
      "dominantFootName": "footCenter",
      "leftFoot": {
        "x": 25.78,
        "y": 99.52,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 76.56,
        "y": 99.52,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 51.17,
        "y": 99.52,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_02_squat_lunge__pose02",
      "athleteId": "athlete-a",
      "status": "runtime-landmarks-v2",
      "contactSide": "visualRight",
      "dominantFootName": "rightFoot",
      "leftFoot": {
        "x": 20.27,
        "y": 96.02,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 82.09,
        "y": 99.31,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 82.09,
        "y": 99.31,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_02_squat_lunge__pose02",
      "athleteId": "athlete-b",
      "status": "runtime-landmarks-v2",
      "contactSide": "both",
      "dominantFootName": "footCenter",
      "leftFoot": {
        "x": 21.22,
        "y": 98.27,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 82.37,
        "y": 99.48,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 51.8,
        "y": 99.48,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_02_squat_lunge__pose03",
      "athleteId": "athlete-a",
      "status": "runtime-landmarks-v2",
      "contactSide": "visualRight",
      "dominantFootName": "rightFoot",
      "leftFoot": {
        "x": 19.67,
        "y": 95.45,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 82.67,
        "y": 99.38,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 82.67,
        "y": 99.38,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_02_squat_lunge__pose03",
      "athleteId": "athlete-b",
      "status": "runtime-landmarks-v2",
      "contactSide": "both",
      "dominantFootName": "footCenter",
      "leftFoot": {
        "x": 19.66,
        "y": 98.13,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 83.45,
        "y": 99.38,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 51.55,
        "y": 99.38,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_02_squat_lunge__pose04",
      "athleteId": "athlete-a",
      "status": "runtime-landmarks-v2",
      "contactSide": "visualRight",
      "dominantFootName": "rightFoot",
      "leftFoot": {
        "x": 19.33,
        "y": 95.12,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 83.0,
        "y": 99.3,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 83.0,
        "y": 99.3,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_02_squat_lunge__pose04",
      "athleteId": "athlete-b",
      "status": "runtime-landmarks-v2",
      "contactSide": "both",
      "dominantFootName": "footCenter",
      "leftFoot": {
        "x": 19.59,
        "y": 98.09,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "rightFoot": {
        "x": 82.77,
        "y": 99.52,
        "confidence": 0.72,
        "source": "alpha-rc39"
      },
      "dominantContactFoot": {
        "x": 51.18,
        "y": 99.52,
        "confidence": 0.72,
        "source": "alpha-rc39"
      }
    },
    {
      "poseKey": "sheet_02_squat_lunge__pose05",
      "athleteId": "athlete-a",
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