feat: unified player controls with heatmap progress + thumbnail preview

- VideoPlayer: 移除 onProgress/seekTo props，新增 bvid/cid 向下透传
- [bvid].tsx: 删除 HeatProgressBar 及 currentTime/duration/seekCmd state
- HeatProgressBar.tsx: 删除（逻辑已合并进 NativeVideoPlayer）
- 计划文档已保存到 docs/superpowers/plans/

services/types.ts

@@ -47,6 +47,7 @@ export interface DashVideoItem {
   codecs: string;
   width: number;
   height: number;
+  stat:any;
   frameRate: string;
   segment_base?: DashSegmentBase;
 }