WHAT THE DRAWING SAID

Source-linked extraction. Bbox anchors back to the PDF.

WHAT THE SHOP ASSUMED

Shop's working spec: versioned, owned, defensible.

WHY A MATERIAL WAS SELECTED

Estimator correction trains the next quote.

HOW A VENDOR PRICE WAS USED

Vendor context becomes the next quote’s default.

WHAT A HUMAN APPROVED

Audit trail across quoting, purchasing, routing.