{
  "steps": [
    {
      "op": "initialize"
    },
    {
      "op": "newSession"
    },
    {
      "op": "prompt",
      "text": "Use the subagent tool exactly once to delegate this subtask: \"Write the words 'partial one', call todo_write once, then keep going until you are cut off.\" After the subagent returns, reply with the single word PARENT_DONE and stop."
    }
  ]
}