Diffs an OpenBMC entity-manager declaration against what a BMC actually reports over Redfish, so sensors that went absent, were disabled at the factory, or stopped moving surface as findings rather than silence. Exit codes are the CI interface.
Which units differ from their cohort, and what changed on this unit across time. Sits above bmc-sensor-audit, holding the machine list and the capture history, so a sensor that quietly went absent on a few trays in a large rack surfaces as a finding. Exit codes are the CI interface.