A favorite entered as a bare host ("ctl.de") passed @IsUrl() but had no
scheme, so `new URL()` threw inside icon discovery and it silently fell
back to a relative "/favicon.ico" — which 502'd through the icon proxy
and left the widget showing the first-letter placeholder ("C").
- add normalizeUrl() (prepend https:// when no scheme present)
- apply it in discoverFavoriteIconUrl and when storing the favorite url,
so both the link and discovery use the normalized value
- on update, re-run discovery when the icon field is cleared, so editing
a previously-broken favorite repairs its icon
- tests: normalizeUrl cases + end-to-end discovery (apple-touch extraction,
scheme-less fallback stays absolute)
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
schalli
9b65ac63c3