Update favicon and enhance UI components for improved user experience

- Replaced PNG favicon with SVG for better scalability and visual quality across devices.
- Updated Vite configuration to include the new SVG favicon and adjusted asset paths.
- Enhanced various UI components with improved focus management and accessibility features.
- Introduced new styles to hide scrollbars while maintaining scroll functionality for a cleaner interface.

neode-ui/src/components/AppLauncherOverlay.vue

@@ -36,13 +36,15 @@
             <kbd class="hidden sm:inline-flex px-2 py-1 text-xs text-white/50 bg-white/10 rounded">Esc</kbd>
           </div>
 
-          <!-- Iframe container -->
-          <div class="relative flex-1 min-h-0 bg-black/40">
+          <!-- Iframe container - overflow hidden to clip inner scrollbars -->
+          <div class="relative flex-1 min-h-0 bg-black/40 overflow-hidden">
             <iframe
+              ref="iframeRef"
               v-if="store.url"
               :src="store.url"
-              class="absolute inset-0 w-full h-full border-0"
+              class="absolute inset-0 w-full h-full border-0 iframe-scrollbar-hide"
               title="App content"
+              @load="injectScrollbarHideIfSameOrigin"
             />
           </div>
         </div>
@@ -57,6 +59,22 @@ import { useAppLauncherStore } from '@/stores/appLauncher'
 
 const store = useAppLauncherStore()
 const closeBtnRef = ref<HTMLButtonElement | null>(null)
+const iframeRef = ref<HTMLIFrameElement | null>(null)
+
+function injectScrollbarHideIfSameOrigin() {
+  try {
+    const doc = iframeRef.value?.contentDocument
+    if (!doc) return
+    const style = doc.createElement('style')
+    style.textContent = `
+      * { -ms-overflow-style: none; scrollbar-width: none; }
+      *::-webkit-scrollbar { display: none; }
+    `
+    doc.head.appendChild(style)
+  } catch {
+    /* Cross-origin: cannot access iframe document */
+  }
+}
 
 const panelClasses = [
   'glass-card',