- Create maintenance chapter with component update guides
- Add updating-components.md with step-by-step procedures for all stack components
- Add component-reference.md with versions, URLs, checksums, and alternatives for each service
- Add security-auditing.md with cargo audit, CVE monitoring, Trivy/Grype scanning
- Add backup-recovery.md with full backup/restore procedures
- Add troubleshooting.md for common issues and solutions
- Update SUMMARY.md with new chapter entry
