Embed uploaded GitHub walkthrough video in README

Author: xypkent

README.en.md

@@ -78,11 +78,9 @@ The library also covers bars, lines, shares, scatterplots, flows, openings, conc
 
 Turn a coffee-sales CSV into a bar chart race with drink icons, then change the title, highlight lattes, and extend the ending. Each drink retains its own color, and icons travel with their labels as ranks change. This 72-second walkthrough starts with the Chinese search “动态柱状图竞赛”, then follows selection, copying instructions, task input, generation, and revision. Gallery interaction is recorded; the task panel is explicitly labeled as a reconstructed workflow, not a client recording. The revised output plays in full. Narration and embedded captions are in Chinese.
 
-<video src="assets/walkthrough-v2/datamagic-workflow-v2-web.mp4" poster="assets/walkthrough-v2/v2-final.png" width="960" style="max-width:100%;height:auto" controls playsinline preload="none">
-  <a href="assets/walkthrough-v2/datamagic-workflow-v2-web.mp4">Watch the full walkthrough</a>
-</video>
+https://github.com/user-attachments/assets/3309108f-97f1-4ade-a64c-a00d4d381649
 
-[Watch / download lightweight version](assets/walkthrough-v2/datamagic-workflow-v2-web.mp4) · [1080p original](assets/walkthrough-v2/datamagic-workflow-v2.mp4) · [Data, prompts and reproduction record](cards/examples/agent-workflow-demo/README.md) · [Compare versions](assets/walkthrough-v2/index.html)
+[Example data, prompts and reproduction record](cards/examples/agent-workflow-demo/README.md)
 
 ### 1. Pick an effect
 

README.md

@@ -78,11 +78,9 @@ https://github.com/user-attachments/assets/6e9b939a-60e8-4e03-ae8a-b60fb23cf9c7
 
 用咖啡店销量 CSV 生成带饮品图标的动态柱状图，再修改标题、突出拿铁、延长结尾。各饮品保留不同配色，图标与名称一起随排名移动。下面的 72 秒演示从中文搜索“动态柱状图竞赛”开始，串起选配方、复制指令、提出任务、生成与修改，配有中文旁白与内嵌字幕。页面操作为真实录屏，任务面板为标注清楚的流程演示；修改后的成片完整播放。
 
-<video src="assets/walkthrough-v2/datamagic-workflow-v2-web.mp4" poster="assets/walkthrough-v2/v2-final.png" width="960" style="max-width:100%;height:auto" controls playsinline preload="none">
-  <a href="assets/walkthrough-v2/datamagic-workflow-v2-web.mp4">播放完整上手演示</a>
-</video>
+https://github.com/user-attachments/assets/3309108f-97f1-4ade-a64c-a00d4d381649
 
-[播放 / 下载轻量版](assets/walkthrough-v2/datamagic-workflow-v2-web.mp4) · [1080p 高清版](assets/walkthrough-v2/datamagic-workflow-v2.mp4) · [数据、指令与复现记录](cards/examples/agent-workflow-demo/README.md) · [新旧版对比页](assets/walkthrough-v2/index.html)
+[查看示例数据、指令与复现记录](cards/examples/agent-workflow-demo/README.md)
 
 ### 1. 选择一个效果