The host reads a one-shot that is not running as having run, so a before-sleep or after-wake unit
declared stopped failed on its first apply; drop-ins on the sleep targets pull them in instead.
Code around sleep was written into the service manager's sleep units by the module that needed it,
and the mesh could not tell a sleeping machine from a lost one. power runs every module's code for
the six moments, each piece bounded, owns logind's power handling from its settings, and says
booted, sleeping, woke, shutting-down and the power source on the bus, sleeping under logind's
delay lock before the machine sleeps.
jochen