Update UI styles and enhance controller navigation functionality

- Replaced cyan color with yellow in various UI components for a cohesive visual theme.
- Improved focus styles for controller navigation, adding subtle grow and glow effects to sidebar items and containers.
- Enhanced controller navigation logic to support direct focus on app containers in the Marketplace and My Apps sections.
- Introduced wheel scrolling support for better navigation experience within scrollable areas.
- Removed unused audio tone function from useLoginSounds.ts to streamline code.

neode-ui/src/views/Marketplace.vue

@@ -134,6 +134,9 @@
       <div
           v-for="app in filteredApps"
         :key="app.id"
+          data-controller-container
+          :data-controller-install="!(isInstalled(app.id) || installingApps.has(app.id)) && (app.source === 'local' || !!app.dockerImage) ? '1' : undefined"
+          tabindex="0"
           class="glass-card p-6 hover:bg-white/10 transition-all cursor-pointer flex flex-col"
           @click="viewAppDetails(app)"
       >
@@ -171,6 +174,7 @@
         </button>
             <button
               v-else-if="app.source === 'local' || app.dockerImage"
+              data-controller-install-btn
               @click.stop="app.source === 'local' ? installApp(app) : installCommunityApp(app)"
           :disabled="installingApps.has(app.id)"
               class="flex-1 px-4 py-2 gradient-button rounded-lg text-sm font-medium disabled:opacity-50 disabled:cursor-not-allowed"