When the page's WebGPU device was lost, the canvas kept showing its
last frame: edits still went through and rendered frames were right,
but the editor never showed them and nothing said why (the status
message about it is drawn in the canvas that can't present any more).
The page now covers the canvas with a notice that offers Save Project
(a download) and Reload. Reload first writes pending changes to
browser storage, so the session snapshot brings the project and its
unsaved changes back; if that write fails it says so and offers
Reload Anyway. Without a kept session (?empty, memory storage) the
notice says to save first.
Test: apps/effectcraft-web/tests/page.mjs (Node, fake DOM).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Add Files... and Upload Folder... read every picked file in one go and
rejected on the first file the browser couldn't read; the Media
Browser dropped that rejection, so nothing was added and nothing said
why. Each file is now read on its own: the readable ones are added and
the status bar names the unreadable ones with the browser's reason and
suggests picking them again. Cancelling the picker is not reported.
Test: apps/effectcraft-web/tests/page.mjs (Node, fake DOM).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude