The workstations' XDG conventions had no owner: xdg-user-dirs-update rewrote
the folders file at every login, both machines' default-application lists
named an editor neither has, and the laptop kept two dead links of the
retired predecessor. The module adopts the operator's folders (three as
settings, as the machines differ), disables the update so it cannot undo the
mesh's file, and writes the machine's own mimeapps list, the last one read,
so the person's choices in their own list always win. Autostart is listed,
not owned: each entry is its application's module's.
