Is CodeNext fully compatible with Code 26.0.1? #6

I intend to use CodeNext with Xcode and Codestral on a MacStudi running MacOS Tahoe 26.0.1. Is the last version of CodeNext fully compatible with Code 26.0.1? I am asking this question because 1) the procedure described in CodeNext does not fit the interface of the latest Xcode (there is no Extension item in Preferences), 2) CodeNext does not appear in the list of extensions to be added. If it is compatible, then how should I proceed to make it usable in Xcode?

Thank you for any relevant information.

Claude