Set default date for datepicker to tomorrow and update navigation visibility

public/app.js

@@ -26,9 +26,16 @@ document.addEventListener('DOMContentLoaded', function() {
 
     // Initialize Materialize components
     M.Sidenav.init(sidenav);
+
+    // Calculate tomorrow's date
+    const today = new Date();
+    const tomorrow = new Date(today);
+    tomorrow.setDate(today.getDate() + 1);
+
+    // Initialize datepicker with tomorrow as the default date
     M.Datepicker.init(document.querySelectorAll('.datepicker'), {
         format: 'yyyy-mm-dd',
-        defaultDate: new Date(),
+        defaultDate: tomorrow,
         setDefaultDate: true,
         firstDay: 1
     });