Tagging the whole role with uninstall caused install/configure/update/export to run first. Use include_role tasks_from uninstall.yml; add safe defaults for uninstall variables.
Preserve passwords from server-info.yml and vault; generate only for new users; remove deleted users from output; re-export URL/QR only when password, domain, port, obfs or files changed.
Remove binary, config, masq, system user, ufw rules, and apt packages from VPS; delete output/<server>/ by default and rebuild global index.html via localhost play.
Store install_server.sh in role files, compare SHA256 with get.hy2.sh on the control node before install/update, refresh the bundled copy when upstream changes, then copy and run it on VPS.
Use now() for export timestamps and ansible_facts['system'] for browser detection. Set become: false on the localhost play to avoid sudo on local fact gathering.
Use Ansible password lookup on the control node so install works before packages are installed on VPS and without pwgen on macOS. Export EDITOR=nano in Makefile for vault-edit.
Sergey Antropoff