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>