Moves the 7 user CRUD methods into sqlmodel_repo/auth.py. _ensure_admin_user stays in __init__.py so DECNET_ADMIN_PASSWORD remains addressable at the module path tests already monkeypatch.
Moves the 7 user CRUD methods into sqlmodel_repo/auth.py. _ensure_admin_user stays in __init__.py so DECNET_ADMIN_PASSWORD remains addressable at the module path tests already monkeypatch.