#!/usr/bin/env python3
from __future__ import annotations

import argparse
from pathlib import Path


def main() -> None:
    parser = argparse.ArgumentParser(description="Build Hugging Face README by combining header + body.")
    parser.add_argument("--header", default="README.hf.header.md")
    parser.add_argument("--body", default="README.md")
    parser.add_argument("--out", default="README.md")
    args = parser.parse_args()

    header = Path(args.header).read_text(encoding="utf-8").rstrip() + "\n"
    body = Path(args.body).read_text(encoding="utf-8").lstrip()

    out = header + "\n" + body
    Path(args.out).write_text(out, encoding="utf-8")


if __name__ == "__main__":
    main()