On klone the venv is created inside the repo with create_cdsc_venv, so
it otherwise shows up as untracked in every git status.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This is optional, and doesn't impact existing users as preexisting
behavior when users specify an output directory is unchanged.
This makes tests not need to copy large files as part of their
execution, as they can ask files to be written to explicit
locations.
Signed-off-by: Will Beason <willbeason@gmail.com>