The "signature help" language server feature currently includes the docstring for the target function or method, but it doesn't have any special logic for constructor calls. It may be desirable to include the docstring for the class in addition to (or in place of) the docstring for the __new__ or __init__ method. I've left a TODO in the signature_help.rs module to revisit this based on user feedback.

Feedback from ty users would be helpful here. What would you like to see displayed in this case?