Adds network-optimizer-skill, an external Codex/Agent Skills repo for safe cross-platform network diagnostics and reversible tuning.

Why it fits:

• Ships as a Codex plugin and Agent Skill.
• Supports macOS, Linux, and Windows before/after network audits.
• Includes Linux BBR and BBR+FQ diagnose/plan/apply/restore helpers with backups and explicit approval.
• Useful as a Meta & Utilities skill for agent-assisted system troubleshooting.

Repo: https://github.com/6Kmfi6HP/network-optimizer-skill