dsh-mobile-ui: Mobile Responsive Overlay for the DSH Web Settings Panel

dsh-mobile-ui is a responsive CSS override plugin maintained by jackuh105, designed to fix mobile layout issues caused by DeepSeek Harness's default 800px width. When the viewport width is 680px or less, the plugin converts modals into full-screen vertical forms, adjusts the navigation bar into a top tab bar that scrolls horizontally, and optimizes scrolling and safe-area handling in the content area. Installation requires specifying the workspace root directory with the `-w` parameter and completing the process using the `dsh plugin add` command; it takes effect after restarting the web profile. Developers can edit the breakpoints in `lib/index.js` or adjust CSS selectors for different versions.