update

public/payment-modal.js

@@ -233,6 +233,7 @@ async function submitPayment() {
     const submitBtn = document.getElementById('payment-submit-btn');
     submitBtn.innerHTML = '⏳ Wird gesendet...';
     submitBtn.disabled = true;
+    if (typeof showSpinner === 'function') showSpinner('Erstelle Payment in QBO...');
 
     try {
         const response = await fetch('/api/qbo/record-payment', {
@@ -264,6 +265,7 @@ async function submitPayment() {
     } finally {
         submitBtn.innerHTML = '💰 Record Payment in QBO';
         submitBtn.disabled = false;
+        if (typeof hideSpinner === 'function') hideSpinner();
     }
 }