feat: Allow admin to create new text channels

toju-app/src/app/features/room/chat-room/chat-room.component.html

@@ -23,12 +23,24 @@
     <div class="flex-1 flex overflow-hidden">
       <!-- Chat Area -->
       <main class="relative flex-1 min-w-0">
-        <div
-          class="h-full overflow-hidden"
-          [class.hidden]="isVoiceWorkspaceExpanded()"
-        >
-          <app-chat-messages />
-        </div>
+        @if (!isVoiceWorkspaceExpanded()) {
+          @if (hasTextChannels()) {
+            <div class="h-full overflow-hidden">
+              <app-chat-messages />
+            </div>
+          } @else {
+            <div class="flex h-full items-center justify-center px-6">
+              <div class="max-w-md text-center text-muted-foreground">
+                <ng-icon
+                  name="lucideHash"
+                  class="mx-auto mb-4 h-16 w-16 opacity-30"
+                />
+                <h2 class="mb-2 text-xl font-medium text-foreground">No text channels</h2>
+                <p class="text-sm">There are no existing text channels currently.</p>
+              </div>
+            </div>
+          }
+        }
 
         <app-screen-share-workspace />
       </main>