Rename env config files from conf/*/prole.cfg to conf/k3d.cfg, conf/k3s.cfg, and conf/gke.cfg. Update shell/Python loaders and etc/deploy scripts to resolve named configs cleanly while keeping legacy fallback behavior. Align k3s Ansible tasks, docs, and regression coverage with the new configuration layout.
Co-authored-by: Junie <junie@jetbrains.com>