docs: add comments to the src/components directory

web/src/components/Empty/PageLoading.tsx

@@ -1,7 +1,28 @@
+/*
+ * @Author: ZhaoYing 
+ * @Date: 2026-02-02 15:04:43 
+ * @Last Modified by: ZhaoYing
+ * @Last Modified time: 2026-02-02 15:49:49
+ */
+/**
+ * PageLoading Component
+ * 
+ * A full-page loading state component that displays while content is being fetched.
+ * Uses the Empty component with a loading icon and localized loading messages.
+ * 
+ * @component
+ */
+
+import { type FC } from 'react';
 import { useTranslation } from 'react-i18next'
+
 import LoadingIcon from '@/assets/images/empty/pageLoading.png'
 import Empty from './index'
-const PageLoading = ({ size = [240, 210] }: { size?: number | number[] }) => {
+
+/**
+ * @param size - Icon size in pixels - single number or [width, height] array (default: [240, 210])
+ */
+const PageLoading: FC<{ size?: number | number[] }> = ({ size = [240, 210] }) => {
   const { t } = useTranslation()
   return (
     <Empty