* feat(skills): add kubernetes-patterns skill
* fix(skills): address CodeRabbit review on kubernetes-patterns
- Add When to Use alias section (repo skill-format requirement)
- Add How It Works overview section (required schema)
- Add Examples quick-reference table (required schema)
- Fix RBAC: split into Pattern A (no API, token disabled) and
Pattern B (needs API, token enabled) to resolve contradiction
between automountServiceAccountToken: false and Role/RoleBinding
- Fix missing -n my-namespace flag on OOMKilled kubectl describe command
