new_content = re.sub(
        r"<!-- only-mkdocs -->.*?<!-- /only-mkdocs -->",
        "",
        new_content,
        flags=re.DOTALL,
    )
    return new_content


@app.command()
def generate_readme() -> None:
    """
    Generate README.md content from main index.md
    """
    readme_path = Path("README.md")
    old_content = readme_path.read_text()
    new_content = generate_readme_content()