_scratchpads: dict[str, str] = {}


def get_scratchpad(conv_id: str) -> str:
    return _scratchpads.get(conv_id, "")


def set_scratchpad(conv_id: str, content: str) -> None:
    _scratchpads[conv_id] = content


def clear_scratchpad(conv_id: str) -> None:
    _scratchpads.pop(conv_id, None)