{
  "elapsed_seconds": 58,
  "total": 1,
  "done": 0,
  "failed": 0,
  "in_progress": 1,
  "songs": {
    "01_星座学家_20260401": {
      "step": "step1",
      "status": "step1_complete",
      "time": "01:27:50"
    }
  }
}