fix: hide pfp initial when photo loads, brighter album art background

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/views/detail.js

@@ -127,6 +127,8 @@ export async function loadArtistDetail(artist) {
       pfpImg.alt = '';
       pfpImg.src = img;
       pfpWrap.prepend(pfpImg);
+      const initial = document.getElementById('artist-hero-pfp-initial');
+      if(initial) initial.style.display = 'none';
     }
   }