POS
The POS surface covers operator login, order building, payment handling, shift workflow, and
degraded-state actions. It is the front-of-house operating surface and is designed to keep transactional
state visible rather than hiding problems behind silent retries or ambiguous status.
KDS
The kitchen display surface covers station flow, expo flow, ticket actions, and queue or block rules
during offline or degraded operation. It is designed to keep kitchen activity explicit and manageable
under normal service conditions as well as partial failure states.
Ordering
The ordering surface covers menu display, pickup-slot selection, cart quoting, checkout, and order-status
visibility. It is intended for customer-facing ordering within the same local operating model as the rest
of the system.
Admin
The admin surface covers setup, device pairing, licensing, diagnostics, printers, TSE state, help, and
AGIF operations wiring. It is the control point for installation, operational checks, and bounded runtime
visibility.