8fb92a4e2a
<img src={fav.iconUrl}> hotlinked the external favicon directly; sites
that send Cross-Origin-Resource-Policy: same-origin (e.g. claude.ai)
get blocked by the browser (net::ERR_BLOCKED_BY_RESPONSE.NotSameOrigin),
leaving only the letter fallback. Points src at the new same-origin
/api-proxy/favorites/:id/icon route instead (same pattern already used
for the user avatar image). Render guard and onError fallback unchanged.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>