Due to the irregular nature of the right stair wall we are going to add skirtboard type molding AFTER the treads and risers are installed. If we add them before then the nosing on the flooring on the loft will have to be extended to far over the edge

Do we add nosing on the step up or just lap the carpet over the edge? The nosing may cause a trip hazard if the carpet is not the same height when installed. Also will this interfer with the sliding Shoji screen idea for this room????