Every run warned twice because of Steward's own inventory: - 'Invalid characters were found in group names': the group 'Docker Swarm' went into the inventory as typed. ansible_group_name() cleans it to docker_swarm (lower case, [a-z0-9_], never a leading digit); two names that clean alike get _2, _3 so neither folds into the other. The group page says what plays call it. The display name is unchanged. - Python interpreter discovery: ansible_env sets ANSIBLE_PYTHON_INTERPRETER=auto_silent unless the environment already sets one; a target or group's ansible_python_interpreter still wins. Runs are scoped by target set (steward:group:<id>), not by group name, and --limit is free text, so neither path depends on the name. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>