### Bug Description The `ProviderService` class's `__init__` takes a `work_dir` argument, stored as `self._work_dir`. Some `ProviderService` methods use this, but others take their own `work_dir` and use that instead. This situation is confusing at best, a source of potential bugs at worst. Ideally, all `work_dir` arguments to methods can be removed and replaced with `self._work_dir`. If some method(s) actually do need a different work dir, perhaps the argument should be named something different? Or if it truly should be called `work_dir` and methods need to take their own, comment(s) illuminating the situation should be added. This same situation doesn't exist on other `service` classes. ### To Reproduce `vi craft_application/services/provider.py`