Adds two skills to the Security & Systems section.
Static firewall ruleset audit playbook shipped to transilienceai/communitytools (PR #22, merged 2026-04-28). 17 vendor-agnostic detectors across FortiGate, PAN-OS, Cisco ASA/IOS, Azure NSG, AWS SG, and iptables. Every finding carries source file + byte offset + quoted rule, plus version-pinned framework citations (NIST CSF 2.0, PCI DSS v4.0.1, ISO/IEC 27001:2022, CIS Controls v8.1, HIPAA).
Real-world use case: used in audit engagements at Network Intelligence to produce client-grade PDF + Excel deliverables from raw vendor configs.
Tamper-proof audit-log query skill for Claude Code sessions. SHA-256 hash chains over append-only JSONL, with helpers for cost rollups, error grep, and integrity checks.
Real-world use case: dropped into a daily Claude Code workflow to surface session costs and verify log integrity without leaving the terminal.
Both rows added to the existing Security & Systems section in alphabetical order, matching the surrounding [name](url) - description. *By [@handle]* pattern. No changes elsewhere.