The whole sheet on the big office panel, reconciled between the office sheet and the books, refreshing itself — and a watchdog that turns the screen back on when the building does.
Two screens in the office, readable from across the room. One shows the live inventory — every home’s state: arriving, leaving, empty, turning — reconciled each minute between the office’s own working sheet and the books. The other shows outstanding repairs, oldest first.
The boards report their own life signs from the device itself, so a screen that has quietly frozen is known to be frozen. A screenshot is a preview; the device’s own signal is the proof.
A board never shows a figure the two sources disagree on without marking the disagreement.
In daily use