Prepare Kalendartool for MPM and disable invites

app/forgot-password/page.tsx

@@ -4,6 +4,7 @@
  * "Passwort vergessen"-Seite (plan.md Abschnitt 11).
  * Antwortet immer mit Erfolgsmeldung (kein Account-Enumeration).
  */
+import { appFetch } from '@/lib/client-fetch';
 import { useState } from 'react';
 import Link from 'next/link';
 import { Button, Card, ErrorMessage, Input, Label } from '@/components/ui/ui';
@@ -20,7 +21,7 @@ export default function ForgotPasswordPage() {
 
     const formData = new FormData(event.currentTarget);
     try {
-      const response = await fetch('/api/auth/forgot-password', {
+      const response = await appFetch('/api/auth/forgot-password', {
         method: 'POST',
         headers: { 'Content-Type': 'application/json' },
         body: JSON.stringify({ email: formData.get('email') }),