release/2026.0…x-invoices

• feature/checkout-address-validation
• feature/payment-provider-migration
• release/2026.04.1-hotfix-invoices
• bugfix/cart-total-rounding-error
• chore/update-typescript-and-eslint
• experiment/new-onboarding-funnel-v3

release/2026.04.1-hotfix-invoices