Learning / practice openings + continuation to middle game

Is there a tool like listudy.org, chessply.com or www.studyopenings.com to learn / practice openings, but that allows you to continue the game against an engine? The idea would be to familiarize yourself with the middle game that arise from the opening that you just practiced.
I know I could copy the PGN after the opening in lichess and play from there, but that's not snappy.

@ArneVogel perhaps the most interesting thing would be to extend LiStudy to integrate stockfish.wasm and a button that allows you to continue playing from the final position of the opening you are practicing.

@supertorpe good idea. I added a "Play against Stockfish" button below the board to play stockfish starting from the current position that is on the board (example: listudy.org/en/studies/7i987f-refuting-the-stafford-gambit ). Let me know if you have any feedback!

@ArneVogel, How fast, I am amazed!
One detail: at the end of the sequence of opening movements, it immediately returns to the starting position, and does not give me the opportunity to play from there.

I can think some suggestions when you're playing against the engine, i.e. a check to put it in "tutor" mode (similar to what Lucas Chess has). If you make a very bad move, I would give you a suggestion in a similar way to how it gives you when you are learning the opening: with an arrow. Giving the opportunity to repeat the movement.

365chess.com offers this if you donate.