feat(toolbar): lead the Plex toolbar with ItemCount too, unify its gaps

Plex browse now uses the same fixed-width ItemCount pill as the feed (its title count → "N items"),
placed as the leading element, and the toolbar gap tightened 2 → 1.5 to match. One consistent
toolbar shape across the source modules.

frontend/src/components/PlexBrowse.tsx

@@ -29,6 +29,7 @@ import SegmentedToggle from "./SegmentedToggle";
 import PlexDiscover from "./PlexDiscover";
 import { PageToolbar } from "./PageShell";
 import ActiveFilterChips from "./ActiveFilterChips";
+import ItemCount from "./ItemCount";
 import { StateMessage } from "./QueryState";
 import { usePlexActiveFilters, usePlexClearFilters } from "./usePlexActiveFilters";
 import { usePlex, usePlexActions } from "./PlexProvider";
@@ -388,17 +389,11 @@ export default function PlexBrowse() {
       {/* The title count is fixed chrome — it portals into the shell's fixed band so it stays put
           while only the poster grid scrolls. */}
       <PageToolbar>
-        <div className="px-4 pt-2 pb-1 max-w-[1600px] mx-auto flex items-center gap-2">
+        <div className="px-4 pt-2 pb-1 max-w-[1600px] mx-auto flex items-center gap-1.5">
+          <ItemCount count={browseQ.isLoading ? undefined : total} />
           {viewToggle}
-          <p className="text-xs text-muted">
-            {browseQ.isLoading
-              ? " "
-              : dq
-                ? t("plex.searchCount", { count: total })
-                : t("plex.count", { count: total })}
-          </p>
           {/* Sort moved out of the filter sidebar to the row above the cards (S3), like the Feed. */}
-          <div className="ml-auto flex items-center gap-2">
+          <div className="ml-auto flex items-center gap-1.5">
             <SortControl
               options={sortOptions}
               sort={sortState}