During PR review of the .python-version inference work, a new private helper _get_current_python_version() was placed above its only caller get_supported_minor_python_versions() in src/usethis/_integrations/environ/python.py. This violates the step-down rule: callers should appear before their callees so that the module reads top-to-bottom like a newspaper.\n\nWhen agents add new helper functions to existing modules they should check where the caller is defined and place the helper below it, not at the top of the file.