[UIPKGE] Credit-card checkout form with a live 3D card preview, wallet shortcut buttons (Apple Pay / Google Pay / PayPal), brand auto-detection, Luhn validation, expiry / CVC checks, and a hookable async submit. Wallet buttons call `onWallet` so the consumer wires the actual SDK; the card form calls `onSucce
pnpm dlx shadcn@latest add "https://registry.directory/r/uday-a/payment-form.json"