Helper function to create a returnable event schema. Type-branded to ensure compile-time category validation. v9: Uses BSBType for cross-language support. Type inference via InferBSBType.
BSB type schema for input validation
BSB type schema for output validation
Optional
Optional description
Event schema object with type brand
API: createReturnableEvent
Helper function to create a returnable event schema. Type-branded to ensure compile-time category validation. v9: Uses BSBType for cross-language support. Type inference via InferBSBType.