OptionalbuildBuild for production.
OptionalconsoleBuild for a console run (stone <custom-command>, stone list).
OptionaldevRun the development server.
OptionalexportExport a template or a config file into the project.
OptionalpreviewServe what was built.
OptionalwatchWatch the sources a rebuild depends on.
Only a supervised target needs it: the CLI restarts the child, but what to watch is
the build's own knowledge.
What a builder does, per command.
Every method is optional: a target that cannot be served, or has nothing to export, simply does not implement that step, and the command says so instead of failing obscurely.