Release v0.2.9

• test: add tests for security audit, SMART, disk I/O, and /proc diagnostics tools (e982e0e)
• feat: add security audit, SMART health, disk I/O metrics, and /proc diagnostics tools (e4703a2)
• feat: add block devices, SELinux/AppArmor, time sync, RAID, logrotate, cron jobs, and system health check tools (7c9ea64)