Pointing the renderer at the site's own `/favicon.ico` was producing
GPUI image-cache errors on every other tab — notion.com redirected
across origins, sites shipped multi-image `image/x-icon` blobs the
PNG/WebP decoder couldn't read, hosts 404'd. Each one logged a noisy
`ERROR gpui::asset_cache: Failed to load asset` line.
Switch `UrlText::favicon_url` to
`https://www.google.com/s2/favicons?domain=<host>&sz=64`. Google's
endpoint normalises every response to PNG, follows redirects on its
side, and serves a `_/` globe glyph for sites without a favicon at
all — same URL shape every browser dev-tools panel already shows
for "favicon" so the fetch is uniformly succeeding.
ZacharyZhang-NY
1c72622db8