fix(w48): remove duplicate media query + bump entity badge font to 10px

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

Author: matte1782

demo/entity-rag/index.html

@@ -261,10 +261,6 @@
       align-items: start;
     }
 
-    @media (max-width: 768px) {
-      .layout { grid-template-columns: 1fr; }
-    }
-
     /* Sidebar / Terminal Panel */
     .sidebar { position: sticky; top: 72px; }
 
@@ -613,7 +609,7 @@
 
     /* Entity Badges */
     .entity-badge {
-      font-size: 9px;
+      font-size: 10px;
       font-weight: 700;
       padding: 3px 8px;
       border-radius: 10px;