ai-usage は何をしますか?
Check AI subscription usage limits across Claude, ChatGPT and Grok in one unified report — percent used, how much is left, and when each window resets. Use when the user runs /ai-usage or /uu, or asks 額度, 用量, usage, limit, 還剩多少, 什麼時候 reset, 被限流了嗎, rate limit, quota, "am I out of Claude", "how much ChatGPT left".