How to contribute?

Hi, I was reading `CONTRIBUTING.md` and decided to give it a try as I'm new to poetry. I'm on Windows; I use pycharm for my python projects so I used its 3.12 interpreter to install first pipx and then poetry. I cloned your repo, discovered that `poetry shell` now needs a separate plugin since poetry 2, and run `poetry install`. `poetry env info` seems to show a sane environment, but nothing really works: - `flake8 catt tests`: flake8 is not a valid command - `python -m catt.cli --help`: ModuleNotFoundError: No module named 'click' - `poetry show`: Error: poetry.lock not found. Run 'poetry lock' to create it. - `poetry lock`: complains about "poetry.dev-dependencies" being deprecated, then exits with: Package docutils (0.21.post1) not found. What am I doing wrong? EDIT Exact same problems inside Ubuntu.