Copland runner

Current state

The runner creates one or more directory trees with an octal mode. It uses mkdir, stat, and chmod directly and no longer uses external commands or nob.h.

copland-runner 1777 ./example ./another/directory

Packaged as pkgs.copland-runner and used by activation for /tmp and /var/tmp. Local tests and a live system switch pass.

Direction

Next candidates are early stage2 boot and owner/group changes.