...

src/app/folders/FoldersClient.tsx

@@ -119,6 +119,7 @@ export default function FoldersClient({ userId }: { userId: string }) {
     <PageLayout>
       <PageHeader title={t("title")} subtitle={t("subtitle")} />
 
+      {/* 新建文件夹按钮 */}
       <button
         onClick={async () => {
           const folderName = prompt(t("enterFolderName"));
@@ -141,9 +142,11 @@ export default function FoldersClient({ userId }: { userId: string }) {
         <span>{loading ? t("creating") : t("newFolder")}</span>
       </button>
 
+      {/* 文件夹列表 */}
       <div className="mt-4">
         <CardList>
           {folders.length === 0 ? (
+            // 空状态
             <div className="text-center py-12 text-gray-400">
               <div className="w-16 h-16 mx-auto mb-3 rounded-full bg-gray-100 flex items-center justify-center">
                 <FolderPlus size={24} className="text-gray-400" />
@@ -151,6 +154,7 @@ export default function FoldersClient({ userId }: { userId: string }) {
               <p className="text-sm">{t("noFoldersYet")}</p>
             </div>
           ) : (
+            // 文件夹卡片列表
             <div className="rounded-xl border border-gray-200 overflow-hidden">
               {folders
                 .toSorted((a, b) => a.id - b.id)