feat(client): add Pagination component and integrate with Table and pages

- add Pagination component with prev/next, ellipsis page range, and optional page-size selector
- add Pagination and Table pagination stories (WithPagination, WithPaginationAndSizeSelector)
- extend Table with optional pageSize and pageSizeOptions props for built-in client-side pagination
- add Timestamp column to Table story fixtures
- enable pagination on all four pages with pageSize=10 and size selector
- add pagination i18n keys to en.json

client/src/i18n/locales/en.json

@@ -41,5 +41,12 @@
     "switch_to_dark": "Switch to dark theme",
     "light_mode": "Light mode",
     "dark_mode": "Dark mode"
+  },
+  "pagination": {
+    "prev": "Previous page",
+    "next": "Next page",
+    "range": "{{from}}–{{to}} of {{total}}",
+    "per_page": "{{count}} per page",
+    "page_size": "Items per page"
   }
 }