- drop DO_SSH flag, --no-ssh option, and setup_ssh() function entirely
- replace inline sshd_config port read with sshd_effective_port() that also scans sshd_config.d drop-ins
- replace raw DEBIAN_FRONTEND export with apt_noninteractive helper and add wait_for_apt guard
- replace hardcoded separator strings with show_separator calls
- add main entrypoint with interactive menu and CLI dispatcher (lxs.sh)
- add shared helpers library with colors, loggers, and spinner (lib/common.sh)
- add app installers for coolify, pterodactyl, uptime-kuma, cloudpanel, and proxmox (apps/)
- add system tools for monitoring, benchmarking, and hardening (tools/)
- add VERSION file (0.1.0) as single source of truth for releases
- add MIT LICENSE
- expand README with usage, project structure, and release workflow