"Add folder or path" promised one thing and offered another: the listing is
folders only, because the Host's browse primitive has no file rows, while the
extras legitimately name files — `../../CONTROLLER.md` is the example the panel
itself gives.
The action is "Add path or file", its field is "Path or file", and the hint says
which of the two the list can show and how the other one is added. Nothing about
the interaction moved; the copy was the part that was wrong.