feat: Implement initial frontend for admin and instructor roles, including dashboards, course management, authentication, and core services.

frontend_management/layouts/instructor.vue

@@ -27,15 +27,15 @@
         </NuxtLink>
       </nav>
       
-      <!-- <div class="absolute bottom-0 left-0 right-0 p-4 border-t">
+      <div class="absolute bottom-0 left-0 right-0 p-4 border-t">
         <button
           @click="handleLogout"
           class="w-full flex items-center gap-3 px-4 py-3 text-red-600 hover:bg-red-50 rounded-lg transition"
         >
-          <span>🚪</span>
+          <q-icon name="logout" size="24px" />
           <span>ออกจากระบบ</span>
         </button>
-      </div> -->
+      </div>
     </aside>
 
     <!-- Main Content -->