Agent Skills: firewall-review

Evidence-safe firewall ruleset audit reference specification — 22 documented detector patterns (17 vendor-agnostic plus 5 FortiGate-specific), a 15-check semantic catalogue, CIS Fortinet FortiGate Benchmark guidance, a custom customer-policy benchmark, and consolidated network-team Excel profiles including grouped observation/severity presentation. Separates configuration-proven findings from runtime, business-context, and external-evidence gaps; every static claim requires source-file + line/offset + quoted-rule evidence.