Variable worldlineOnboardingConst

Declarative onboarding metadata for the Worldline Direct adapter pair: the credentials a host collects, the provider event-type strings a host subscribes to, and the CSP hosts the Hosted Tokenization iframe touches. The credential keys mirror WorldlineServerAdapterConfig. The event list is the DOCUMENTED payment/refund set only — webhook.ts's EVENT_TYPE_MAP additionally tolerates a few undocumented variants, but this descriptor drives host subscription lists and must not present those as provider behavior. The documented terminal refund signal is payment.refunded; there is no documented refund-failure event, so refund failure is observed by polling retrieveRefund.

There is no client-scope credential: the Hosted Tokenization iframe is addressed entirely by the hostedTokenizationUrl the server session returns, so the browser holds no Worldline key.