Contributors now get a one-click dev environment that mirrors CI exactly:
Python 3.11 (middle of the 3.9/3.11/3.13 matrix), ruff pinned to the same
>=0.4.0,<0.5 range CI enforces, and pre-commit hooks auto-installed from
the existing .pre-commit-config.yaml.
Pinning ruff in post-create.sh is the load-bearing piece: pyproject only
sets a floor, so without the pin the ruff extension would install 0.15.x
and phantom-fail lint against CI's 0.4.x.
Igor Lins e Silva
6a5e73c856