Example: Invoice / PDF template

[ericdellacasa8]

Context

Elements supports <Document> for print/PDF mode, but we do not currently have a real invoice or receipt example showing this pillar clearly.

For a launch story built around one component tree to email, web, and PDF, we need a concrete PDF-oriented example.

Definition of Done

• Add an invoice or receipt template built with <Document>
• Include line items using <Table>
• Include subtotal, tax, total, and payment/status details
• Demonstrate producing print-ready HTML with renderToHtml(tree)
• Add a short note or snippet showing how this HTML can be converted to PDF with Puppeteer or Playwright
• Add the example either as a demo template under a new document category or under examples/invoice-pdf/

Where to start

• packages/react/src/components/Document.tsx
• Table component
• render-to-json.test.tsx
• wrappers.test.tsx