Slack comes from the AUR and Toolbox from JetBrains' self-updating tarball,
so neither is declared: the host installs official packages only, and a
pinned archive would fight Toolbox's own updates. Slack's start and the
operator's i3 window rules become one node-display-session contribution,
because Slack's own launch-on-login is a symlink in ~/.config/autostart.
Toolbox keeps its own autostart entry as its one start. The shared
desktop.go header now names all four bundles.
Both are official packages already on both workstations, started once by dex from an XDG
autostart entry (the client's own, the package's). The modules declare the package, add no
second start, own none of the apps' files, and give the mesh status, log, restart and check.
jochen