Add NocoDB configuration settings and restructure dashboard navigation

- Add NocoDBSettingsDialog component with API endpoints for config management
- Update dashboard navigation routes and menu structure
- Integrate external user management via auth portal
- Add NocoDB settings dialog to admin panel

pages/dashboard/admin.vue

@@ -101,6 +101,12 @@
 
 
     </v-container>
+
+    <!-- NocoDB Settings Dialog -->
+    <NocoDBSettingsDialog
+      v-model="showNocoDBSettings"
+      @settings-saved="handleSettingsSaved"
+    />
   </div>
 </template>
 
@@ -180,9 +186,14 @@ const viewAuditLogs = () => {
   // TODO: Implement audit logs navigation
 };
 
+const showNocoDBSettings = ref(false);
+
 const portalSettings = () => {
-  console.log('Navigate to portal settings');
-  // TODO: Implement portal settings navigation
+  showNocoDBSettings.value = true;
+};
+
+const handleSettingsSaved = () => {
+  console.log('NocoDB settings saved successfully');
 };
 
 const createUser = () => {