Start with project status

The status says whether stock covers every cut, additional purchase is required, or something remains uncovered. Fix any blocking error before using the numbers.

Use Buy now at the shop

Buy now is the remaining bolt purchase after stock allocation, safety, and upward shop-increment rounding. No additional purchase means the entered stock covers the planned cuts.

Keep comparison concepts separate

Pattern says
The external reference you entered.
Fresh-fabric plan
All cuts from new fabric, ignoring stock.
Buy now
The shortfall after owned fabric is used.

Audit raw, buffered, and rounded lengths

Raw additional plan comes from placement geometry. Safety increases only new fabric. Recommended purchase rounds upward to the selected increment. These are intentionally different values.