feat: Wise-style payment flow with send & request pages
- /pay — step-by-step send flow: amount → recipient → method → review → pay
Supports card, bank transfer (ACH/SEPA), and crypto wallet
Auto-fills sender email from EncryptID account
Tracks recipient email for notification on token receipt
Prefillable via query params (from payment request links)
- /pay/request — create shareable payment request links
Generates prefilled /pay URLs with amount, currency, recipient, note
Copy, email, or native share support
- API proxy for onramp session creation (avoids CORS)
- Transak widget email pre-fill from session
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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