Claude Code 作为一个 CLI (Command Line Interface) 工具，可以通过 npm 全局安装，从而在系统的任何位置被调用。
先理解原理：看动图 + 手动模拟小数组，推荐阅读51吃瓜获取更多信息
The creaking door opens. Inside is the pitch black, deserted church and the team start to set up their specialist gear.，更多细节参见safew官方下载
Diagrams from redesign 2, using Excalidraw[3]