feat: implement attendance tracking UI with dynamic table rendering and data persistence

static/app.js

@@ -25,15 +25,7 @@ function renderTable() {
     headRow.appendChild(document.createElement('th')).innerText = 'Date';
     data.players.forEach((name, i) => {
         const th = document.createElement('th');
-        const input = document.createElement('input');
-        input.type = 'text';
-        input.value = name;
-        input.onchange = e => {
-            data.players[i] = e.target.value;
-            saveData();
-            renderTable();
-        };
-        th.appendChild(input);
+        th.innerText = name;
         headRow.appendChild(th);
     });
     // Guest column