scripts/push-split.sh pushes one monorepo subdirectory to its matching
split repo on Hephaestus via an ephemeral git-subtree-split branch, so
history is preserved on the forge side. The remote name is derived from
the directory (Navigator/Resolver suffix stripped) or passed explicitly.
TheseusNavigator/test-installer.wsb is a Windows Sandbox profile that
maps dist-public read-only and launches the setup exe on logon, for
clean-machine installer checks.
