Removing the `background:` block from settings.yaml was not sufficient.
Homepage server-renders the wallpaper as an INLINE style on
`<div id="background">` and Next.js caches the rendered page, so the aurora
survived both the config removal and a container restart. Only a full
recreate clears that cache, and recreating this container costs an hour of
missing tab bar and i18n before it heals itself.
Adding `#background` to the canvas reset is deterministic and immediate,
and it also keeps the canvas correct if the setting is ever re-added by
accident. The existing selector missed it: the DOM is
body > div#__next > div#background, so `body > div` matched the Next.js
root, not the wallpaper layer.
Verified live rather than locally: the served page now reports no
background image, with all three canonical faces loaded and the group
eyebrows rendering as JetBrains Mono in Australis cyan.