fix(ui): SortControl direction toggle no longer wraps on narrow popovers

The asc/desc buttons in the sort popover footer share one component across
Feed and Plex browse, but rendered differently: the Plex popover is narrower
(short option labels), so "Descending" wrapped icon-over-text and made the
active button taller. Add whitespace-nowrap to the direction buttons and bump
the popover min-width (min-w-52 -> min-w-56) so both call-sites render an
identical single-line toggle.

frontend/src/components/SortControl.tsx

@@ -55,7 +55,7 @@ export default function SortControl({
   const summary = activeOpt?.label ?? defaultLabel ?? options[0]?.label ?? "";
 
   const segCls = (on: boolean) =>
-    `flex flex-1 items-center justify-center gap-1 rounded-md border px-2 py-1 text-2xs transition ${
+    `flex flex-1 items-center justify-center gap-1 whitespace-nowrap rounded-md border px-2 py-1 text-2xs transition ${
       on
         ? "border-accent bg-accent/15 text-accent"
         : "border-border text-muted hover:border-accent/50 hover:text-fg"
@@ -92,7 +92,7 @@ export default function SortControl({
       <PopoverSurface
         popover={pop}
         ariaLabel={label}
-        className="glass-menu min-w-52 rounded-xl p-1.5 shadow-lg animate-[popIn_0.16s_ease]"
+        className="glass-menu min-w-56 rounded-xl p-1.5 shadow-lg animate-[popIn_0.16s_ease]"
       >
         {/* One exclusive choice of sort key (radios), scoped by a group so AT announces which is
             checked — the surface is a menu (see the mode above), never a listbox with orphaned options. */}