Double mobile map height in list mode (35vh → 70vh)

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

frontend/src/app/page.tsx

@@ -827,7 +827,7 @@ export default function Home() {
                 <span className="text-[10px]">아래로 스크롤하면 지도</span>
               </div>
             </div>
-            <div className="h-[35vh] shrink-0 relative border-t dark:border-gray-800">
+            <div className="h-[70vh] shrink-0 relative border-t dark:border-gray-800">
               <MapView
                 restaurants={filteredRestaurants}
                 selected={selected}