Replaces the recipe dropdown with an inline Section containing a name
field and a spice-repeater with percentage inputs. On save, the recipe
is created (version 1) or updated in place; spice pivot rows are synced
via sync(). SumEquals100 rule enforces that percentages add up to 100.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Add SKU and GTIN fields to product variant repeater
- Render EAN/UPC barcode live from GTIN input (picqer/php-barcode-generator)
- Pull variant price from Shopify API instead of defaulting to 0
- Sync sku/gtin through EditProduct and CreateProduct save logic
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>