Refactor backend CORS settings to include default origins and improve error handling in chat services: Introduce dynamic CORS origin handling, enhance RabbitMQ message sending with fallback mechanisms, and update WebSocket service to manage pending messages. Update UI components for better accessibility and responsiveness, including adjustments to dialog and navigation elements. Enhance styling for improved user experience across various components.

frontend/src/components/AppContent.vue

@@ -2,6 +2,7 @@
   <main class="app-content contenthidden">
     <div class="app-content__scroll contentscroll">
       <div class="app-content__inner">
+        <AppSectionBar />
         <router-view></router-view>
       </div>
     </div>
@@ -9,14 +10,20 @@
 </template>
   
   <script>
+  import AppSectionBar from './AppSectionBar.vue';
+
   export default {
-    name: 'AppContent'
+    name: 'AppContent',
+    components: {
+      AppSectionBar
+    }
   };
   </script>
   
 <style scoped>
 .app-content {
   flex: 1;
+  height: auto;
   min-height: 0;
   padding: 0;
   overflow: hidden;
@@ -24,20 +31,20 @@
 
 .app-content__scroll {
   background: transparent;
+  height: 100%;
   min-height: 0;
 }
 
 .app-content__inner {
   max-width: var(--shell-max-width);
-  height: 100%;
-  min-height: 0;
+  min-height: 100%;
   margin: 0 auto;
-  padding: 14px 18px;
+  padding: 14px 18px 12px;
 }
 
 @media (max-width: 960px) {
   .app-content__inner {
-    padding: 12px;
+    padding: 12px 12px 10px;
   }
 }
 </style>