The previous favicon was the dark logo on transparent which was nearly
invisible. This uses the proper logo with purple-cyan gradient glow that
shows clearly against both light and dark browser tabs.
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Render logo to square PNG favicons (32/180/512px) and link them in
MainLayout.astro head. Previously the active layout had no favicon.
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>