Need sanity check tests that run in a venv isolated from dev dependencies

[bckohan]

All of the tests run in the context of a venv that have the development dependencies installed. We need a couple tests that run with a sanitized venv to verify no errant imports are missed.

These tests can also contain performance profiling.

[bckohan]

something like:

uv run --no-dev --no-extras django-admin shellcompletion complete "shellcompletion comp"