{
  "session_id": "fixture-session",
  "transcript_path": null,
  "cwd": ".",
  "hook_event_name": "Stop",
  "model": "gpt-5.6-sol",
  "permission_mode": "default",
  "turn_id": "fixture-turn",
  "stop_hook_active": false,
  "last_assistant_message": "Completed."
}