#!/usr/bin/env python3.12
"""
Generate placeholder HTML/CSS/JS from Design.md.
"""
from __future__ import annotations

import argparse
import pathlib


def main() -> int:
    parser = argparse.ArgumentParser()
    parser.add_argument("design", help="Path to Design.md")
    args = parser.parse_args()

    design_path = pathlib.Path(args.design)
    if not design_path.exists():
        print(f"ERROR:design_not_found:{design_path}")
        return 2

    site_dir = design_path.parent
    # Prepare assets directory only; leave actual implementation to LLM coding tool
    assets = site_dir / "assets"
    assets.mkdir(exist_ok=True)
    print(f"OK:prepared:{assets}")
    return 0


if __name__ == "__main__":
    raise SystemExit(main())