fix login form

web/templates/shares.html

@@ -128,6 +128,16 @@
 </div>
 
 <script>
+  // Check authentication on page load
+  (function() {
+    const token = localStorage.getItem('atlas_token');
+    if (!token) {
+      // No token, redirect to login
+      window.location.href = '/login?return=' + encodeURIComponent(window.location.pathname);
+      return;
+    }
+  })();
+
 let currentTab = 'smb';
 
 function switchTab(tab) {