feat: migrate PDF417 barcode generation to zxing-wasm/writer

Replace custom PDF417 generation (generateBarcode/renderBarcode) with zxing-wasm's writeBarcode for improved reliability and smaller codebase. Updated all 4 components (BillEditForm, PrintPreview, ViewBillCard, ViewLocationCard) to use new Pdf417BarcodeWasm component with ecLevel 5 for error correction.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

app/ui/ViewLocationCard.tsx

@@ -7,13 +7,13 @@ import { formatCurrency, formatIban } from "../lib/formatStrings";
 import { useTranslations } from "next-intl";
 import { useRouter } from "next/navigation";
 import { ViewBillBadge } from "./ViewBillBadge";
-import { Pdf417Barcode } from "./Pdf417Barcode";
 import { EncodePayment, PaymentParams } from "hub-3a-payment-encoder";
 import Link from "next/link";
 import { LinkIcon } from "@heroicons/react/24/outline";
 import { uploadUtilBillsProofOfPayment } from "../lib/actions/locationActions";
 import QRCode from "react-qr-code";
 import { TicketIcon } from "@heroicons/react/24/solid";
+import { Pdf417BarcodeWasm } from "./Pdf417BarcodeWasm";
 
 export interface ViewLocationCardProps {
     location: BillingLocation;
@@ -153,7 +153,7 @@ export const ViewLocationCard: FC<ViewLocationCardProps> = ({ location, userSett
                                 <li><strong>{t("payment-reference-label")}</strong><pre className="inline pl-1">{paymentParams.PozivNaBroj}</pre></li>
                             </ul>
                             <label className="label p-2 grow bg-white border border-gray-300 rounded-box justify-center">
-                                <Pdf417Barcode hub3aText={hub3aText} />
+                                <Pdf417BarcodeWasm hub3aText={hub3aText} />
                             </label>
                         </>
                         : null