fix: align account selector header height with search/reply toolbars

components/layout/sidebar.tsx

@@ -942,7 +942,10 @@ export function Sidebar({
       {/* Header - hidden in the Pro shell, which owns its own chrome and
           would otherwise render an empty strip (no collapse, no switcher). */}
       {!isEmbedded && (
-        <div className={cn("flex items-center border-b border-border h-14", isCollapsed ? "justify-center px-2" : "gap-1 px-2")}>
+        // Border lives on the wrapper (outside the h-14 box) so the bar's total
+        // height matches the search/reply toolbars, which border-b their wrapper too.
+        <div className="border-b border-border">
+          <div className={cn("flex items-center h-14", isCollapsed ? "justify-center px-2" : "gap-1 px-2")}>
             <Button
               variant="ghost"
               size="icon"
@@ -967,6 +970,7 @@ export function Sidebar({
               <AccountSwitcher variant="expanded" className="flex-1" />
             )}
           </div>
+        </div>
       )}
 
       {!isCollapsed && <DemoBanner />}