--- '@pdsjs/node': minor --- `experimental.git.external` hands the git reads to a service of the operator's choosing: the PDS keeps the data and the identity, and stops serving the git routes. `experimental.git.guardOnly` is the finer knife: drop the routes but keep the branch-protection write guard, which is the one piece that cannot move, because enforcement only means something at the write. `external` implies `guardOnly`.