feat(web): Most Played horizontal compact tiles + revert Rediscover

Operator clarification: the 'compact like the app' request was for
Most Played, not Rediscover.

- CompactTrackCard rewritten as a horizontal Row: cover thumbnail
  left, title + artist column right. w-72 (~288 px) matches the
  Android CompactTrackTile's 176 dp visual weight. Most Played's
  existing chunked-rows-in-shared-scroller layout now reads like
  the Android multi-row LazyHorizontalGrid.
- Rediscover steps back from the compact w-32/w-28 widths to w-40/
  w-36 (the pre-PR-#66 sizes) — the size hierarchy still works
  with the regular AlbumCard treatment.

web/src/routes/+page.svelte

@@ -198,12 +198,10 @@
             ariaLabel="Rediscover albums"
           >
             {#snippet item(album: import('$lib/api/types').AlbumRef)}
-              <!-- Rediscover uses the compact tile size — same visual
-                   weight as Most Played's CompactTrackCard. Smaller
-                   than Recently Added (w-48) so the page hierarchy
-                   stays clear: fresh content gets visual real estate,
-                   throwbacks recede. -->
-              <div class="w-32"><AlbumCard {album} /></div>
+              <!-- Rediscover sits below Recently Added in the size
+                   hierarchy. w-40 keeps it readable without competing
+                   with the freshest content above. -->
+              <div class="w-40"><AlbumCard {album} /></div>
             {/snippet}
           </HorizontalScrollRow>
         {/if}
@@ -214,7 +212,7 @@
             ariaLabel="Rediscover artists"
           >
             {#snippet item(artist: import('$lib/api/types').ArtistRef)}
-              <div class="w-28"><ArtistCard {artist} /></div>
+              <div class="w-36"><ArtistCard {artist} /></div>
             {/snippet}
           </HorizontalScrollRow>
         {/if}