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@@ -402,6 +402,23 @@ anything that assumes one key per person. for it would have failed these tests for no visible reason. Use `Object.defineProperty`; the suite is now green on 18 and 24 +- **A fallback chain reaches its floor silently.** `_openDownloadTarget` tries a + granted folder, then a service worker, then "collect it in memory and hand the + browser a blob". In the desktop application the first two do not exist — + `showDirectoryPicker` is absent and Chromium refuses a worker on a custom + scheme — so **every download under 512 MB went through RAM**, and the only + visible symptom was a Save As dialog at the *end* instead of the start. + Nothing errored. When a chain degrades, check what the floor costs on every + platform that will reach it + +- **Two elements each claiming `100vh - 52px`, one inside the other's padding.** + `.layout` and `.page-center` both reserved the viewport below the header, and + `main`'s `24px` top and bottom were added on top — a permanent 48px scrollbar + on sign-in at every window size. Found by measuring in the running app + (`document.documentElement.scrollHeight` against `innerHeight`, then the + bottom edge of every element), not by reading the stylesheet, which is the + standing rule here + ## Two lessons that cost four rounds of live testing - **`QE/deploy/e2e.py` cannot test `app.js`.** It is a second implementation of the |