Every test target required 'clean', which is 'git clean -fdX .' - so running the unit tests deleted every git-ignored file the operator had, venv and caches included. It was compensating for a missing .dockerignore: the Dockerfile's COPY . . otherwise drags __pycache__, egg-info and build output into the image context.
The ignore file fixes that where it belongs, so the prerequisite can go. 'clean' remains available as its own target.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
