{
  "steps": [
    { "op": "initialize" },
    { "op": "newSession" },
    { "op": "prompt", "text": "Use the subagent tool exactly once to delegate this subtask to a child agent: 'Reply with exactly the word CHILD_OK and nothing else.' After the subagent returns, reply with the single word PARENT_DONE and stop. Do not use the bash tool." }
  ]
}