hostwarden-runtimeslisted

# hostwarden-runtimes Installing programming languages on servers using [mise](https://mise.jdx.dev). Applies to every distro family and to macOS and FreeBSD alike. **The policy, before the procedure:** a language runtime comes from mise, never from the distribution's packages and never from nvm, rbenv, pyenv or asdf. `rules/best-practices.md` carries the reasoning under "Runtime via apt/dnf/zypper"; what it adds here is that a second version manager on the same host is a second source of truth. Either is fine when the user asks for it by name — never by default, and never silently. **Appliances get no runtime.** When the host's machine memory has an `Appliance:` line and that file in `rules/appliance/` rules out installing packages on the host, install neither mise nor a runtime there. Say so, and name what the appliance file offers instead: an app, a container or a plugin. Reporting what is already there still applies. ## When to Use mise Use mise for **language runtimes** — Node.js, Ruby, Python, Elixir, Go, Java, etc. Do **not** use mise for system tools or services (nginx, PostgreSQL, etc.) — those should come from the distro's package manager. ## Asking is not installing "Which Node version is on web1", "what runtimes does this host have" and anything else phrased as a question is answered and finished. Report what is installed, or that nothing is — do not install mise, do not install a runtime, do not offer to as part of the answer. The user asked what is there.