systemctl expands *, ? and [ in a unit argument, so reset-failed or stop
of "*" would have acted on every unit. wanted-by called a link dangling on
any stat error, followed a linked .wants anywhere, and missed most of the
manager's load path; it now says each of these, and says nothing names a
unit only of the directories it searched.
mesh/merge-gate fail: builds systemd → ace, g14, novox, shanks; no bus step; a manifest the change touches fails the module check: systemd claims node-serv…
So a leftover unit's trigger is found and its failed record cleared
through the seat, not a shell: wanted-by reads the manager's reverse
dependencies and the enable links naming the unit, saying which dangle.