release(v2.2.0): 223 skills, security suite, self-eval, full docs update
- Add 8 new skills: 6 security (adversarial-reviewer, ai-security, cloud-security, incident-response, red-team, threat-detection), self-eval, snowflake-development
- Update all counts: 223 skills, 298 tools, 416 references, 23 agents, 22 commands
- Update CHANGELOG.md with v2.2.0 entry
- Update all plugin.json versions to 2.2.0
- Update CLAUDE.md, README.md, docs/index.md, docs/getting-started.md, mkdocs.yml
- Verify MkDocs build (301 pages), Codex/Gemini sync, all new scripts pass --help
https://claude.ai/code/session_011CHSDjqWBPRcEJ3oJrAUHS
6fa92054bd