新功能
設定檔搬家不留痕跡，終端機指令不再裝聾作啞
你平常不用管的計費快取（cache，暫存資料的地方）現在搬到了專屬的資料夾裡，而且系統會自己讀舊檔案當備用，你完全不用重設。另外，在終端機打 usage report 指令時，如果打錯字，以前系統會假裝沒看到直接跑預設畫面，現在它會明確報錯教你怎麼打；查說明文件（--help）的速度也變快了。就像你把家裡的工具箱換了個抽屜放，要用的時候自動拿到手；而平常那個問錯問題就沉默的助理，現在終於會主動說「不好意思，你指的是這個嗎？」了。
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English
FEATURE
Configs move homes seamlessly, and terminal commands stop playing deaf
The billing cache (where temporary data is stored) has smoothly moved to its own dedicated folder. The system will still read your old file as a backup, so you don't have to lift a finger to migrate. Also, when you make a typo running the usage report command in the terminal, instead of silently ignoring you and running the default report, the system now stops and tells you what went wrong. Looking up the help manual (--help) is also noticeably faster. It's like moving your toolbox to a new drawer and having your tools automatically show up in your hand when needed; and that assistant who used to stare blankly when asked the wrong question finally speaks up to say, "Sorry, did you mean this instead?"
原始 CHANGELOG
Original changelog設定檔搬家不留痕跡，終端機指令不再裝聾作啞
**Pricing cache moved under `~/.usage/`**: the LiteLLM pricing cache now lives at `~/.usage/pricing_cache.json` instead of `~/.claude/pricing_cache.json`, following the principle that usage-owned state belongs in its own directory. The legacy path stays as a read-only fallback for seamless migration. Thanks @ericweichun.
**Explicit `usage report --help` and unknown-option handling**: previously the CLI silently ignored unknown report options and `--help` still triggered agent detection. Now `--help` returns the help text immediately and unknown options error out cleanly. Thanks @ericweichun.