Give the pill zone room for even, centered margins

54px barely cleared two rows, so 3-pill cards filled the zone edge-to-edge while
1-pill rows had slack. Raise the zone to 64px so the wrapped case keeps symmetric
top/bottom margins; centering then reads evenly across 1-, 2-, and 3-pill cards.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

frontend/src/lib/components/ArticleCard.svelte

@@ -108,8 +108,11 @@
      the zone. (The hero is its own layout and opts out.) */
   .tile .tags {
     align-items: center; align-content: center;
-    min-height: 54px;   /* fully contains two rows of pills, so every card's
-                           tag zone is the same height regardless of pill count */
+    /* Comfortably taller than two rows of pills, so the wrapped (3-pill) case
+       still gets even margins top and bottom rather than filling edge-to-edge.
+       With centering, 1-, 2-, and 3-pill cards all sit symmetrically and their
+       dividers/titles line up. */
+    min-height: 64px;
     border-bottom: 1px solid var(--line);
   }
   /* Source on its own line below the tags, left-justified, for uniformity. */