fix: resolve 10 code review issues

High priority:
- Fix concurrent race condition for view_count/like_count (atomic update)
- Add route request ID tracking to prevent race conditions
- Filter get_joke by status=approved (no pending content leak)
- Add error feedback for like button

Performance:
- Optimize random joke query (avoid full table sort)
- Limit page_size max to 100 (DoS prevention)

Medium:
- Add localStorage quota error handling
- Handle empty AI response gracefully
- Fix generate content title extraction

Low:
- Add rejected_jokes to stats API
- Update dashboard to show rejected count

admin/src/router/index.js

@@ -16,6 +16,10 @@ const routes = [
       { path: 'jokes/edit/:id?', name: 'JokeEdit', component: () => import('@/views/joke/Edit.vue') },
       { path: 'category/type', name: 'CategoryType', component: () => import('@/views/category/Type.vue') },
       { path: 'category/crowd', name: 'CategoryCrowd', component: () => import('@/views/category/Crowd.vue') },
+      { path: 'settings', name: 'Settings', component: () => import('@/views/setting/Index.vue') },
+      { path: 'links', name: 'LinkList', component: () => import('@/views/links/List.vue') },
+      { path: 'links/edit/:id?', name: 'LinkEdit', component: () => import('@/views/links/Edit.vue') },
+      { path: 'feedbacks', name: 'FeedbackList', component: () => import('@/views/feedback/List.vue') },
     ]
   }
 ]