Add playbooks/us4-firewalld.yml, a narrow reconciliation of the audited us4
public zone: fails closed on drift or unknown allowances, never reloads or
restarts firewalld, and does not manage Docker rules. Requires explicit
apply + provider-console confirmations, backs up the firewalld config and
ruleset, schedules an automatic 15-minute rollback via at, and verifies SSH,
HTTPS routes, containers, Fail2ban jails, and the WireGuard health check before
cancelling rollback. Pins ansible.posix 2.2.2 in requirements.yml.
Also expand hosts/us4.wsvc.info.md with deployment config and a live audit
snapshot (2026-08-12).
windyboy