rofi, clipmenu, feh, i3status-rust and the laptop's model module wrote files into i3's config.d,
naming no dependency on the window manager. They now contribute their lines; i3 places them under a
line naming each module, and config.d is the operator's alone. The catalogue-wide test composes the
contributions as the controller does and checks the whole with i3 -C.
Replaces the AUR greenclip (declared absent) with the official clipmenu, started
once from the session's xinitrc slot, its menu the launcher's dmenu command bound
as an i3 drop-in, its history in the runtime directory. Go tools read and change
clipmenu's own store under its lock.
jochen