feat: Introduce core admin and instructor dashboards with dedicated services, pages, and layouts.

frontend_management/layouts/admin.vue

@@ -53,6 +53,15 @@
           <span>หมวดหมู่</span>
         </NuxtLink>
 
+        <NuxtLink
+          to="/admin/recommended-courses"
+          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="recommend" size="24px" />
+          <span>คอร์สแนะนำ</span>
+        </NuxtLink>
+
         <NuxtLink
           to="/admin/audit-logs"
           class="flex items-center gap-3 px-4 py-3 rounded-lg hover:bg-primary-100 transition mb-2"