safe-mode 3

DSH undo/rollback system: snapshot config files on change, undo/redo the last action from the WebUI or by chat, and roll back broken plugin trees without reinstalling. Works even when DSH fails to boot (offline CLI + GUI).

A loader-independent rescue console for DeepSeek Harness when a broken plugin prevents the Web UI from starting.

DSH 跨版本启动护航：一套 dsh-guard 引擎，既是命令行工具（dsh-guard.cmd / pull-dsh.cmd），又是可安装的 Web 插件（侧边栏「启动护航」面板）。