- Extend Sheets read range from A1:Z to A1:AZ (52 columns)
- Parse longueur, largeur, marque, famille, sousFamille, prixRemise, specificFields
- Add /api/products/sheet-info endpoint to fetch product data by ref
- Auto-fill family and dimensions on product selection in all 3 mockup entry points
- Strengthen carrelage mockup prompt with strict tile-size consistency rules
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>