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/style.css

@@ -444,6 +444,28 @@ body {
   background: linear-gradient(180deg, rgba(255, 255, 255, 0.4) 0%, rgba(255, 255, 255, 0.2) 100%);
 }
 
+/* Hide scrollbar but keep scroll functionality - applied globally to all scrollable content */
+.scrollbar-hide,
+.overflow-y-auto,
+.overflow-auto,
+.overflow-y-scroll,
+.iframe-scrollbar-hide {
+  -ms-overflow-style: none;
+  scrollbar-width: none;
+}
+.scrollbar-hide::-webkit-scrollbar,
+.overflow-y-auto::-webkit-scrollbar,
+.overflow-auto::-webkit-scrollbar,
+.overflow-y-scroll::-webkit-scrollbar,
+.iframe-scrollbar-hide::-webkit-scrollbar {
+  display: none;
+}
+/* Iframe scrollbar hide - targets iframe element; inner doc scrollbars need same-origin injection */
+iframe.iframe-scrollbar-hide {
+  -ms-overflow-style: none;
+  scrollbar-width: none;
+}
+
 /* Animations */
 @keyframes fadeUpIn {
   0% {