- unset AGENT_ID/AGENT_WORKSPACE/AGENT_VERIFY so plugin installers
don't refuse operations gated to human-only
- --install-cli <branch>: shallow-clone HarborForge.Cli to tmp, symlink
into plugins/ for the install script to find
- --yonexus-client/--yonexus-protocol <branch>: same pattern for
Yonexus.Client and Yonexus.Protocol (needed for tsc build)
- build_yonexus step runs tsc before Yonexus.Server install
- cloned repos and symlinks cleaned up on EXIT trap
- --install-cli only passed to HarborForge when the flag is given