dsh-client-ui-mobile

The DeepSeek Harness Web GUI ships with a three-column desktop layout: a conversation sidebar, an 188px settings nav rail, and hover-only tool-row controls. On a phone-width viewport all three become cramped or simply unreachable. dsh-client-ui-mobile fixes exactly that: below an 820px breakpoint it reshapes the entire shell without touching any upstream code — a pure browser-side plugin consisting of one <style> tag and a small React overlay.

The changes hit the high-frequency interactions first. The sidebar becomes a left-side drawer summoned by a floating menu button, dismissed by a backdrop or Esc, and auto-closed on session switch. The settings panel expands from a desktop nav rail into a full-screen sheet with a top title, horizontally scrollable section tabs, safe-area insets, and a mask-fade-plus-slide-up entrance animation that respects prefers-reduced-motion. The tool-call Inspect button — hover-only on desktop — is revealed permanently and enlarged to a 32px touch target. A bottom-sheet style for the details panel is already in place and will activate the moment upstream wires in its entry point. Every selector is anchored to stable attributes such as role, aria-modal, and data-* rather than hashed class names, so the plugin survives DSH frontend rebuilds.

It is strictly UI-only: no host routes, no file access, no network calls, no settings persistence. On stop, every injected DOM node and style tag is torn down. It is ideal for users who access the DSH Web GUI daily from a phone or small tablet, and for developers who need a comfortable interaction surface in narrow windows.