| Cashier | Fullscreen POS UI (/point-of-sale/*) on Vendor Desktop |
| Vendor Desktop | Electron POS app on the lane PC (shell index-cashier.html) |
| Lane / register | Checkout location (pos_register_id) |
| Work shift | Open–close cashier session with cash count |
| Draft | Order not yet finalised; stock may not yet be decremented |
| Outbox | Desktop queue of place-order payloads awaiting sync |
| Code128 barcode | Invoice barcode on the receipt derived from client_order_id |
| Bridge | WebSocket between Vendor Desktop and the server for ECR |
| Wedge scanner | USB scanner that emulates a keyboard |
| Bootstrap | Workspace-init data fetched via GET …/bootstrap |