first commit

frontend/app.js

@@ -0,0 +1,14 @@
+// Simple fetch to populate visit list
+const visitList = document.getElementById('visit-list');
+async function loadVisits() {
+  const resp = await fetch('http://localhost:8000/visits/');
+  const data = await resp.json();
+  visitList.innerHTML = '';
+  data.forEach(v => {
+    const li = document.createElement('li');
+    li.textContent = `${new Date(v.start_time).toLocaleString()} - ${v.duration_minutes} min`;
+    visitList.appendChild(li);
+  });
+}
+loadVisits();
+// Could add intervals or form handling later