style: dashboard LED smaller, TipModal flags fullbleed + subtle picker buttons

- Dashboard: LED digits 20px (was 26px) — less crowded between flags
- MatchCard: topRow margins for better badge alignment
- TipModal: flags now object-fit:cover (fullbleed)
- TipModal: picker buttons less glossy — reduced shine from 55% to 12%,
  smaller shadow, subtler hover effect

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/components/MatchCard.module.css

@@ -21,12 +21,14 @@
     inset 0 1px 0 rgba(255,255,255,0.07) !important;
 }
 
-/* Top row */
+/* Top row — badges inset to align near flag inner edges */
 .topRow {
   display: flex;
   align-items: center;
   gap: 8px;
-  margin-bottom: 18px;
+  margin-bottom: 12px;
+  margin-left: 8px;
+  margin-right: 8px;
 }
 
 .status {