fix(playground): 新增交互视频封面

src/app/[locale]/playground/realtime-video.tsx

@@ -2,6 +2,7 @@
 
 import { Fragment } from 'react'
 import { cn } from '@/lib/utils'
+import XiaohongImage from '@public/xiaohong.jpg'
 import { useBreakAspectRatio } from './use-break-aspect-ratio'
 
 function RealtimeVideo() {
@@ -15,6 +16,7 @@ function RealtimeVideo() {
         loop
         muted
         playsInline
+        poster={XiaohongImage.src}
         controls={false}
         src='https://tangledup-ai-staging.oss-cn-shanghai.aliyuncs.com/uploads/honghe-acfic-chat/public/video/jz.mp4'
         className={cn(