feat: add server-side pagination, search, and filtering to all collection and admin pages

- Public pages (videos, magazine, models): URL-driven search, sort, category/duration
  filters, and Prev/Next pagination (page size 24)
- Admin tables (videos, articles): search input, toggle filters, and pagination (page size 50)
- Tags page: tag filtering now done server-side via DB arrayContains query instead of
  fetching all items and filtering client-side
- Backend resolvers updated for videos, articles, models with paginated { items, total }
  responses and filter/sort/tag args

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

packages/frontend/src/lib/i18n/locales/en.ts

@@ -23,6 +23,8 @@ export default {
     my_profile: "My Profile",
     anonymous: "Anonymous",
     load_more: "Load More",
+    page_of: "Page {page} of {total}",
+    total_results: "{total} results",
   },
   header: {
     home: "Home",
@@ -251,6 +253,7 @@ export default {
       rating: "Highest Rated",
       videos: "Most Videos",
       name: "A-Z",
+      recent: "Newest",
     },
     online: "Online",
     followers: "followers",
@@ -913,6 +916,7 @@ export default {
       saving: "Saving…",
       creating: "Creating…",
       deleting: "Deleting…",
+      all: "All",
       featured: "Featured",
       premium: "Premium",
       write: "Write",
@@ -944,7 +948,8 @@ export default {
       role_updated: "Role updated to {role}",
       role_update_failed: "Failed to update role",
       delete_title: "Delete user",
-      delete_description: "Are you sure you want to permanently delete {name}? This cannot be undone.",
+      delete_description:
+        "Are you sure you want to permanently delete {name}? This cannot be undone.",
       delete_success: "User deleted",
       delete_error: "Failed to delete user",
     },
@@ -971,6 +976,7 @@ export default {
     videos: {
       title: "Videos",
       new_video: "New video",
+      search_placeholder: "Search videos...",
       col_video: "Video",
       col_badges: "Badges",
       col_plays: "Plays",
@@ -1005,6 +1011,8 @@ export default {
     articles: {
       title: "Articles",
       new_article: "New article",
+      search_placeholder: "Search articles...",
+      filter_all_categories: "All categories",
       col_article: "Article",
       col_category: "Category",
       col_published: "Published",