Phase6c: Optional Company contact name

src/lib/billing-pdf.tsx

@@ -80,6 +80,11 @@ interface PdfStrings {
   dueDate: string;
   period: string;
   billTo: string;
+  // Phase 6 fix: prefix shown before the optional contact-person
+  // name on the bill-to block. "z.Hd." (DE) / "Attn:" (EN) /
+  // "À l'attention de" (FR) / "c.a." (IT). Empty/unused when the
+  // invoice has no contactName on its snapshot.
+  attentionPrefix: string;
   description: string;
   quantity: string;
   unitPrice: string;
@@ -107,6 +112,7 @@ const MESSAGES: Record<string, PdfStrings> = {
     dueDate: "Zahlbar bis",
     period: "Abrechnungsperiode",
     billTo: "Rechnungsempfänger",
+    attentionPrefix: "z.Hd.",
     description: "Beschreibung",
     quantity: "Menge",
     unitPrice: "Einzelpreis",
@@ -139,6 +145,7 @@ const MESSAGES: Record<string, PdfStrings> = {
     dueDate: "Due date",
     period: "Billing period",
     billTo: "Bill to",
+    attentionPrefix: "Attn:",
     description: "Description",
     quantity: "Qty",
     unitPrice: "Unit price",
@@ -171,6 +178,7 @@ const MESSAGES: Record<string, PdfStrings> = {
     dueDate: "Échéance",
     period: "Période de facturation",
     billTo: "Destinataire",
+    attentionPrefix: "À l'attention de",
     description: "Description",
     quantity: "Qté",
     unitPrice: "Prix unitaire",
@@ -203,6 +211,7 @@ const MESSAGES: Record<string, PdfStrings> = {
     dueDate: "Scadenza",
     period: "Periodo di fatturazione",
     billTo: "Destinatario",
+    attentionPrefix: "c.a.",
     description: "Descrizione",
     quantity: "Qtà",
     unitPrice: "Prezzo unitario",
@@ -524,6 +533,15 @@ const InvoicePdf: React.FC<InvoicePdfProps> = ({ invoice, lines }) => {
         <View style={styles.billToBlock}>
           <Text style={styles.billToLabel}>{s.billTo}</Text>
           <Text style={styles.billToName}>{snap.companyName}</Text>
+          {/* Phase 6 fix: optional "z.Hd." / "Attn:" line for routing
+              the printed invoice internally at the customer. Prints
+              between the company name and street address, in the
+              invoice's locale (frozen at issue time). */}
+          {snap.contactName && (
+            <Text>
+              {s.attentionPrefix} {snap.contactName}
+            </Text>
+          )}
           <Text>{snap.streetAddress}</Text>
           <Text>
             {snap.postalCode} {snap.city}