DSH mobile-friendly web UI plugin (PiUI chat-pager mode): on narrow screens the stock three-column frame becomes a horizontal scroll-snap pager — sidebar | chat — with the chat column rendered completely untouched as a flush rounded card with a PiUI-style 3D flip; swipe or the top-left button flips pages, a settle re-snap always lands on a whole page, and the sidebar page shares the chat background. Safe-area + virtual-keyboard insets, touch-sized controls, hidden scrollbars on coarse pointers. Pure client-side adaptation over the stock frame — zero core changes, works on official rc.2 distributions.