During February 2026, Whiteshirt focused on enhancing the hover user experience for RBS inline annotations in the ruby/typeprof repository. By leveraging Ruby and Ruby on Rails, they refined how parameter types are displayed on hover, improving clarity for developers working with type annotations and inference. Their work included adding scenario tests for class methods and return types, ensuring robust test coverage and reliability. Whiteshirt also refactored the comment collection logic, specifically the get_rbs_comment_before method, to stabilize and maintain accurate comment retrieval. This targeted feature work contributed to a smoother developer workflow and more dependable type information presentation.