Air Path map is unreadable — crossing edges, links drawn through node boxes, floating unattached labels

Operator: ‘Airpath really needs a revisit, it is a complete mess and no longer really means anything.’ In the current render the Room->4×8 bundle and the purple recirc line cross each other and pass straight through the 4×8 node box, obscuring its ‘in 164 cfm’ label; the ‘cascade 112’, ‘recirc 6’ and ‘dump 7’ labels float free of the edges they belong to; and the Outdoors node sits far right connected by a single thin unlabelled line. Needs a layout pass so the diagram states the real air path.