{
  "approach": "Combine NP with a direction-confirmed second-print pHat alpha of 0.12, and compare a later-print variant; not implemented because the prescribed setup failed.",
  "tried": [],
  "next": "Repair the setup extraction to avoid restoring archive ownership, then rerun setup before reproducing CH and NP and performing the prescribed paired measurements.",
  "code": null,
  "code_sha256": null,
  "delta": null,
  "score": {
    "seed_start": 0,
    "n": 0,
    "mean_edge": null,
    "se": null
  },
  "paired": {
    "reference": "NP",
    "seed_start": 800000,
    "n": 0,
    "mean_diff": null,
    "se": null,
    "worst": []
  },
  "seconds_per_simulation": null,
  "validate_ok": false,
  "blocked": {
    "step": "sh scratch/setup.sh: download and extract uv (first invocation, from the pinned checkout root)",
    "error": "Exit code 2. tar: uv-x86_64-unknown-linux-gnu/uv: Cannot change ownership to uid 1001, gid 117: Invalid argument\ntar: uv-x86_64-unknown-linux-gnu/uvx: Cannot change ownership to uid 1001, gid 117: Invalid argument\ntar: uv-x86_64-unknown-linux-gnu: Cannot change ownership to uid 1001, gid 117: Invalid argument\ntar: Exiting with failure status due to previous errors",
    "checkout_commit": "6b6921f8d463314aa7c96234e1be25a25245f704",
    "simulations_completed": 0
  },
  "citations": []
}