{
  "stage": "COMPLETE_L01_TWO_PARTS",
  "goal": "L01 two-part Pose/RGB/Tracking cache only",
  "parts": {
    "L01_P01": [
      1,
      2542
    ],
    "L01_P02": [
      2543,
      19975
    ]
  },
  "expected_samples": [
    1044,
    7261
  ],
  "source_frame": "L01 1-based",
  "seconds": "L01-relative actual PTS",
  "sample": "part-local 0-based",
  "tracking": "fresh per part; identity namespace=(part_id,T)",
  "excluded": [
    "Event evaluation",
    "engine execution",
    "new video",
    "RTSP",
    "existing C01-C22 changes"
  ],
  "next": "reuse verified completed stages; failed transfer never triggers inference"
}