Fix logout so it deletes token in database

WebApp/ts/auth.ts

@@ -4,18 +4,17 @@ function deleteCookie(name: string): void {
     document.cookie = `${name}=; path=/; expires=Thu, 01 Jan 1970 00:00:00 GMT`;
 }
 
-function logoutUser(): void {
-    // Inform backend to remove cookie if necessary
-    fetch('/api/logout', {
-        method: 'POST',
-        credentials: 'include',
-    }).catch((err) => console.warn('Logout request failed:', err));
+ async function logoutUser(): Promise<void> {
+    await fetch("/api/auth/logout", {
+        method: "POST",
+        headers: {
+            "Content-Type": "application/json",
+        },
+    });
 
-    // Clear the auth cookie
-    deleteCookie('token');
+     deleteCookie('token');
 
-    // Redirect to login page
-    window.location.href = 'index.html';
+    window.location.href = "/index.html";
 }
 
 function redirectToLogin(): void {
@@ -46,7 +45,10 @@ function setupAuthUI(): void {
 
     if (logoutBtn) {
         logoutBtn.classList.toggle('d-none', !isAuthenticated);
-        logoutBtn.addEventListener('click', logoutUser);
+        logoutBtn.addEventListener('click', (e) => {
+            e.preventDefault();
+            logoutUser();
+        });
     }
 
 }