Major refactor of install.sh and uninstall.sh to improve robustness, cross-distro support, and low-RAM VPS behavior. install.sh: add safety cd, colored helpers, Python detection with fallback to 3.12, RAM check and swap setup, noninteractive apt/dnf and needrestart handling, Docker/Docker Compose/Node installation, clone/update repo, create system dirs and install bundled templates, set up venv and dependencies, generate .env, create self-signed SSL, install systemd service, configure nginx reverse proxy, build frontend on host to avoid Docker memory issues, start services, perform health checks, and send install telemetry. uninstall.sh: formatting/consistency fixes, require root, safer docker compose teardown, remove /etc/serverkit and /var/serverkit, and send uninstall telemetry. Also add CONTRIBUTORS.md and remove the .claude code-review SKILL.md.
