added check to get user token before loading data

src/baby_monitor/static/log-sleep.html

@@ -189,12 +189,10 @@
       </form>
     </div>
 
+    <script src="/auth-utils.js"></script>
     <script>
       // Check if user is authenticated
-      const token = localStorage.getItem("access_token");
-      if (!token) {
-        window.location.href = "/login.html";
-      }
+      const token = getToken();
 
       // Determine return URL based on referrer
       function getReturnUrl() {