Upper warehouse

Use the marker list to search and jump; tap a pin for read-only details, then edit when signed in. Table view drags chips between cells; floor view pans the plan. When signed in, copy a checkpoint URL for a grid cell and encode it as a QR code—scanning opens this map and highlights that cell (great on iPhone). Office staff can search by customer for pull locations. Stack as many items per cell as needed (window, door, or screen).