Service ticket lifecycle
The state machine for a service ticket. Drop-off → in-progress → ready → picked up.
Transaction lifecycle
From pending → paid → optionally refunded. The state machine for a sale.
Rental lifecycle
From booking → pickup → active → returned. Optional damage charge or late fee at return.
Purchase Order lifecycle
From draft → sent → partial → received. Reconciliation against vendor invoices.
Staff session lifecycle
From sign-in → active → idle-timeout-locked → expired. Session tokens and the lockout overlay.