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"""Verify frozen dataset bytes, group isolation and optional independent review coverage."""

import argparse
import json
from pathlib import Path

from decisioncraft.data import audit_dataset


def main() -> None:
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument("--dataset", type=Path, required=True)
    parser.add_argument("--review", type=Path)
    parser.add_argument("--output", type=Path, required=True)
    args = parser.parse_args()
    if args.output.exists():
        parser.error("output already exists; retain prior audit evidence")
    result = audit_dataset(args.dataset, args.review)
    args.output.parent.mkdir(parents=True, exist_ok=True)
    with args.output.open("x", encoding="utf-8") as stream:
        stream.write(json.dumps(result, indent=2, sort_keys=True) + "\n")
    print(json.dumps(result, indent=2))


if __name__ == "__main__":
    main()