Use tenant business payment info for invoice QR codes

backend/src/modules/serialexecution.service.ts

@@ -537,6 +537,9 @@ export function getDocumentDataBackend(
 ) {
     const businessInfo = tenant.businessInfo || {}; // Fallback falls leer
     const paymentQrBankAccount = bankAccounts.find((account: any) => !account.archived && !account.expired && account.iban) || null
+    const paymentQrIban = businessInfo.iban || paymentQrBankAccount?.iban
+    const paymentQrBic = businessInfo.bic || paymentQrBankAccount?.bic
+    const paymentQrRecipient = businessInfo.bankAccountOwner || paymentQrBankAccount?.ownerName || businessInfo.name || tenant.name
 
     // --- 1. Agriculture Logic ---
     // Prüfen ob 'extraModules' existiert, sonst leeres Array annehmen
@@ -731,9 +734,10 @@ export function getDocumentDataBackend(
         agriculture: itemInfo.agriculture,
         // Falls du AdvanceInvoices brauchst, musst du die Objekte hier übergeben oder leer lassen
         usedAdvanceInvoices: [],
-        paymentQr: paymentQrBankAccount && itemInfo.payment_type === "transfer" ? {
-            iban: paymentQrBankAccount.iban,
-            recipientName: paymentQrBankAccount.ownerName || businessInfo.name || tenant.name,
+        paymentQr: paymentQrIban && itemInfo.payment_type === "transfer" ? {
+            iban: paymentQrIban,
+            bic: paymentQrBic,
+            recipientName: paymentQrRecipient,
             amount: totals.totalGross,
             remittance: itemInfo.documentNumber || itemInfo.title,
         } : null