...esponse key
- Add _properties_from_getters() to build request body schema from
 argToCalls getter methods when the DTO is absent from userDefinedTypes
- Add _extract_response_dto_key() to derive the response object key from
 the actual response DTO class name instead of hard-coding 'description'
- Add _is_custom_dto() to distinguish application DTOs from stdlib types
- Add ±1 line tolerance in _infer_java_response_codes() to handle atom
 recording slices at the annotation line vs the method signature line
- Fix OpenAPI title format: '{name} OpenAPI Specification'

...tor pattern