"Add emergency backup and update fullcalendar scripts"

backend/app/app.py

@@ -1823,6 +1823,7 @@ def api_admin_system_health():
 
 @app.route("/api/admin/fix-errors", methods=['POST'])
 @login_required 
+@csrf.exempt
 def api_admin_fix_errors():
     """API-Endpunkt um automatische Fehler-Reparatur auszuführen."""
     if not current_user.is_admin: