"feat: Implement CSRF documentation update in backend/app/CSRF_FIX_DOCUMENTATION.md"

backend/app/templates/guest_request.html

@@ -435,11 +435,22 @@ document.addEventListener('DOMContentLoaded', function() {
                 printer_id: formData.get('printer_id') ? parseInt(formData.get('printer_id')) : null
             };
             
+            // CSRF-Token aus Meta-Tag auslesen
+            const csrfToken = document.querySelector('meta[name="csrf-token"]')?.content;
+            
+            const headers = {
+                'Content-Type': 'application/json',
+                'X-Requested-With': 'XMLHttpRequest'
+            };
+            
+            // CSRF-Token hinzufügen, wenn vorhanden
+            if (csrfToken) {
+                headers['X-CSRFToken'] = csrfToken;
+            }
+            
             const response = await fetch('/api/guest/requests', {
                 method: 'POST',
-                headers: {
-                    'Content-Type': 'application/json',
-                },
+                headers: headers,
                 body: JSON.stringify(data)
             });