docs: add comments to the src/components directory

web/src/components/Markdown/VideoBlock.tsx

@@ -1,15 +1,32 @@
-import { memo } from 'react'
+/*
+ * @Author: ZhaoYing 
+ * @Date: 2026-02-02 15:16:18 
+ * @Last Modified by: ZhaoYing
+ * @Last Modified time: 2026-02-02 15:54:55
+ */
+/**
+ * VideoBlock Component
+ * 
+ * Renders video elements from markdown nodes.
+ * Extracts video source URLs and creates HTML video players with controls.
+ * 
+ * @component
+ */
 
+import { memo } from 'react'
 import type { FC } from 'react'
 
+/** Props interface for VideoBlock component */
 interface VideoBlockProps {
   node: {
     children: { properties: { src: string } }[]
   }
 }
+
+/** Video block component that renders video elements from markdown nodes */
 const VideoBlock: FC<VideoBlockProps> = (props) => {
-  // console.log('VideoBlock', props)
   const { children } = props.node;
+  /** Extract video source URLs from node children and filter out empty values */
   const srcs = children.map(item => item.properties?.src).filter(item => item)
 
   return (