refactor(ui): always show icon-only app switcher, drop auto-compact

The toolbar app switcher used a ResizeObserver-based overflow detection
(useAutoCompact) to collapse app labels when space ran out. With the
number of managed apps growing, the labels are collapsed in practice
anyway, so remove the mechanism and render icons only. Buttons now carry
title/aria-label so app names remain discoverable via tooltip and
accessible to screen readers.

src/App.tsx

@@ -42,7 +42,6 @@ import { openclawKeys, useOpenClawHealth } from "@/hooks/useOpenClaw";
 import { hermesKeys, useOpenHermesWebUI } from "@/hooks/useHermes";
 import { hermesApi } from "@/lib/api/hermes";
 import { useProxyStatus } from "@/hooks/useProxyStatus";
-import { useAutoCompact } from "@/hooks/useAutoCompact";
 import { useUsageCacheBridge } from "@/hooks/useUsageCacheBridge";
 import { useTauriEvent } from "@/hooks/useTauriEvent";
 import { useLastValidValue } from "@/hooks/useLastValidValue";
@@ -247,9 +246,6 @@ function App() {
   const effectiveEditingProvider = useLastValidValue(editingProvider);
   const effectiveUsageProvider = useLastValidValue(usageProvider);
 
-  const toolbarRef = useRef<HTMLDivElement>(null);
-  const isToolbarCompact = useAutoCompact(toolbarRef);
-
   useUsageCacheBridge();
 
   const promptPanelRef = useRef<any>(null);
@@ -1277,10 +1273,7 @@ function App() {
                   <ProfileSwitcher activeApp={activeApp} />
                 </div>
               )}
-            <div
-              ref={toolbarRef}
-              className="flex flex-1 min-w-0 overflow-x-hidden items-center py-4 pr-2"
-            >
+            <div className="flex flex-1 min-w-0 overflow-x-hidden items-center py-4 pr-2">
               <div
                 className="flex shrink-0 items-center gap-1.5 ml-auto"
                 style={{ WebkitAppRegion: "no-drag" } as any}
@@ -1399,7 +1392,6 @@ function App() {
                       activeApp={activeApp}
                       onSwitch={setActiveApp}
                       visibleApps={visibleApps}
-                      compact={isToolbarCompact}
                     />
 
                     <div className="flex items-center gap-1 p-1 bg-muted rounded-xl">