def _default_user_dir(self) -> str:
        """Get platform-specific default user data directory"""
        system = platform.system()
        if system == "Windows":
            return str(Path.home() / "AppData/Local/Google/Chrome/User Data")
        elif system == "Darwin":
            return str(Path.home() / "Library/Application Support/Google/Chrome")
        else:  # Linux
            return str(Path.home() / ".config/google-chrome")
Get platform-specific default user data directory
backend/Browser/webrover_browser.py