{
  "experiment": "6-2",
  "title": "Real subprocess async execution, queueing, interruption, and progress cancellation",
  "authority": "book/chapter4.md:579",
  "execution": {
    "mode": "allowlisted asyncio subprocesses",
    "shell": false,
    "worker": "analysis_worker.py",
    "input": "book/chapter4.md",
    "progress_source": "child stdout",
    "result_source": "child-computed file metrics"
  },
  "scenarios": [
    "long command plus immediate current-time response before completion",
    "two deferred instructions batch on completion and produce Japanese HTML",
    "user cancellation terminates the child process and runtime recovers",
    "3/2/1 percent jobs; query remaining jobs once; cancel only progress at or below 50 percent"
  ],
  "acceptance": {
    "long_job_at_least_three_seconds": true,
    "placeholder_return_is_nonblocking": true,
    "all_terminal_jobs_are_real_subprocesses": true,
    "cancelled_jobs_have_os_return_codes": true,
    "completed_jobs_have_stdout_and_input_hashes": true,
    "all_artifacts_are_hash_manifested": true,
    "no_simulated_terminal_result_can_pass": true
  }
}