"""中控 AI 文本小工具."""


def is_ai_error_reply(text: str) -> bool:
    t = (text or "").strip()
    return t.startswith("AI 调用失败") or t.startswith("AI 生成失败")


def clip_text(text: str, max_chars: int) -> str:
    s = str(text or "").strip()
    limit = max(200, int(max_chars or 0))
    if len(s) <= limit:
        return s
    return s[: limit - 1].rstrip() + "…"
