fix: reload round data when navigating holes

Co-authored-by: aider (openrouter/thinkingmachines/inkling-small:free) <aider@aider.chat>

frontend/app.js

@@ -119,21 +119,15 @@ function prevHole() {
   if (currentIndex > 0) {
     saveHole().then(() => {
       currentIndex--;
-      const holes = currentData.holes.sort((a,b) => a.hole_number - b.hole_number);
-      renderHole(holes[currentIndex]);
-      renderNav(holes);
+      loadRound();
     });
   }
 }
 
 function nextHole() {
   saveHole().then(() => {
-    const holes = currentData.holes.sort((a,b) => a.hole_number - b.hole_number);
-    if (currentIndex < holes.length - 1) {
-      currentIndex++;
-      renderHole(holes[currentIndex]);
-      renderNav(holes);
-    }
+    currentIndex++;
+    loadRound();
   });
 }