{
  "phase": "observe-4",
  "type": "RuntimeError",
  "reason": "STAGE_DROP_NO_FURTHER_START",
  "trace": "Traceback (most recent call last):\n  File \"/tmp/codex/ltb1021/2026-09-16_contextra-pose-batch_r01/runtime.py\", line 248, in trial\n    raise RuntimeError('STAGE_DROP_NO_FURTHER_START')\nRuntimeError: STAGE_DROP_NO_FURTHER_START\n"
}