OptionalloggerOptional JavaScript logger instance.
OptionaluiOptional custom PIN collector and user-key selector for app-owned UI.
OptionaluserHandle returned by configureBindingUserKeyStorage(...) that configures
per-client user-key metadata storage.
Runtime configuration for the Binding client.
Remarks
Only stateful, client-level concerns belong here: the logger, UI callbacks, and custom key storage. Per-operation options (appPin, biometric, jwt, signingAlgorithm) are passed directly to
bindForJourney/signForJourney.