Update

frontend/src/components/FeedList.tsx

@@ -22,7 +22,7 @@ function FeedList() {
   
   // Pagination state
   const [currentPage, setCurrentPage] = useState(1);
-  const [pageSize, setPageSize] = useState(12);
+  const [pageSize, setPageSize] = useState(15);
   const [totalPages, setTotalPages] = useState(1);
   const [totalFeeds, setTotalFeeds] = useState(0);
 
@@ -192,10 +192,10 @@ function FeedList() {
               borderRadius: "4px",
             }}
           >
-            <option value={6}>6件表示</option>
+            <option value={15}>15件表示</option>
-            <option value={12}>12件表示</option>
+            <option value={30}>30件表示</option>
-            <option value={24}>24件表示</option>
+            <option value={45}>45件表示</option>
-            <option value={48}>48件表示</option>
+            <option value={60}>60件表示</option>
           </select>
           <button type="button" className="btn btn-secondary" onClick={fetchFeeds}>
             更新