1. Register seller (V2 accounts.create)
Creates a Connect account with identity.country=br, dashboard=full, Stripe fee/loss responsibilities, merchant card_payments, and empty customer config. Never uses top-level express/standard/custom type.
2. Onboarding (Account Links V2)
Redirects to Stripe-hosted onboarding. Refresh status after return; selling unlocks when card_payments is active.
Account ID: — create an account first —
3. Products (connected account)
Complete onboarding until card_payments is active before creating products.