The block added earlier this pass showed a grep pattern with a
bracketed placeholder embedded inside the regex itself
('\.[service-to-service zone]') - not valid regex syntax, would never
produce the shown output if actually run. Replaced with the real
command (matching the _URL constant-naming pattern, which doesn't
need the domain at all) and its real output, domain suffix genericized
in output only. Separated the Authentik/Slack/fleetAudit/pfSense
reasoning into prose, not disguised as more grep output.