- Receipt component with thermal (80mm) and full-page layout support
- Code 128 barcode from transaction number via JsBarcode
- Store name, address, line items, totals, payment info, barcode
- Print button on sale complete screen (browser print dialog)
- Email button placeholder (disabled, ready for SMTP integration)
- @media print CSS hides everything except receipt content
- Receipt data fetched from GET /transactions/:id/receipt
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>