feat: Add initial frontend setup including authentication, instructor, and admin course management modules.

frontend_management/layouts/admin.vue

@@ -26,6 +26,15 @@
           <span>จัดการหลักสูตร</span>
         </NuxtLink>
 
+        <NuxtLink
+          to="/admin/courses/pending"
+          class="flex items-center gap-3 px-4 py-3 rounded-lg hover:bg-primary-100 transition mb-2"
+          active-class="bg-primary-500 text-white hover:bg-primary-600"
+        >
+          <q-icon name="pending_actions" size="24px" />
+          <span>คอร์สรออนุมัติ</span>
+        </NuxtLink>
+
         <NuxtLink
           to="/admin/users"
           class="flex items-center gap-3 px-4 py-3 rounded-lg hover:bg-primary-100 transition mb-2"