"""Deprecated CLI stub maintained for backward compatibility."""

from __future__ import annotations

import sys


def main() -> None:  # pragma: no cover - legacy entrypoint
    print(
        "wormhole_proof.experiment has been retired. "
        "Use `python run_smooth.py --output <dir> --seed <n>` instead.",
        file=sys.stderr,
    )
    raise SystemExit(1)


if __name__ == "__main__":  # pragma: no cover
    main()