Build size curves from demand net of returns, catch broken size runs before stock dies, and get reorder quantities by size. For Shopify apparel brands.

• Size curves built per style from demand net of returns, not gross sales
• Broken size runs flagged while the leftover stock can still be rescued
• Reorder quantities by size, covering lead time and net of stock on hand
• Styles too new to forecast borrow a curve and say so on every line
• Read-only: reads what sold, in which size, and never who bought it.