feat(admin): add certificates page to admin sidebar and router

- AdminLayout: add گواهینامه‌ها menu item
- admin router: register /certificates route → AdminCertificatesPage
- endpoints: add getAdminCertificates, addAdminCertificate, deleteAdminCertificate

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/features/admin/router.js

@@ -274,4 +274,15 @@ export default [
       subtitle: 'درخواست‌های اعزام مبلغین را مشاهده و مدیریت نمایید.',
     },
   },
+  {
+    path: '/certificates',
+    name: 'admin-certificates',
+    component: () => import('@/features/admin/certificates/pages/AdminCertificatesPage.vue'),
+    meta: {
+      layout: 'admin',
+      role: 'admin',
+      title: 'گواهینامه‌ها',
+      subtitle: 'گواهینامه‌های دوره‌ها را صادر و مدیریت نمایید.',
+    },
+  },
 ]

src/layouts/AdminLayout.vue

@@ -173,6 +173,12 @@ const menuItems = computed(() => [
     to: { name: 'admin-missionary-requests' },
     active: route.name === 'admin-missionary-requests',
   },
+  {
+    title: 'گواهینامه‌ها',
+    icon: 'certificate',
+    to: { name: 'admin-certificates' },
+    active: route.name === 'admin-certificates',
+  },
 ])
 </script>
 

src/services/api/endpoints.js

@@ -196,6 +196,11 @@ export const endpoints = {
   listAdminMissionaryRequests: '/admin/missionary-requests',
   showAdminMissionaryRequest: '/admin/missionary-requests/:id',
   changeAdminMissionaryRequestStatus: '/admin/missionary-requests/:id/status',
+
+  // ─── Admin: certificates ───────────────────────────────────────────────────
+  getAdminCertificates: '/admin/certificates',
+  addAdminCertificate: '/admin/certificates',
+  deleteAdminCertificate: '/admin/certificates/:id',
 }
 
 export const buildUrl = (template, params = {}) =>