Add package dimensions for shipping calculation

- Add length, width, and height fields to product blueprint (in centimeters)
- Add corresponding data-item attributes for Snipcart shipping calculation
- Enable volume-based shipping cost calculation

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

site/blueprints/pages/product.yml

@@ -33,6 +33,9 @@ tabs:
                   fr: Partagé entre les versions FR et EN
                 translate: false
                 width: 1/4
+              space:
+                type: gap
+                width: 2/4
               weight:
                 label:
                   en: Weight (g)
@@ -45,6 +48,42 @@ tabs:
                   fr: Poids en grammes pour le calcul de la livraison
                 translate: false
                 width: 1/4
+              length:
+                label:
+                  en: Length (cm)
+                  fr: Longueur (cm)
+                type: number
+                min: 0
+                default: 0
+                help:
+                  en: Package length in centimeters
+                  fr: Longueur du colis en centimètres
+                translate: false
+                width: 1/4
+              width:
+                label:
+                  en: Width (cm)
+                  fr: Largeur (cm)
+                type: number
+                min: 0
+                default: 0
+                help:
+                  en: Package width in centimeters
+                  fr: Largeur du colis en centimètres
+                translate: false
+                width: 1/4
+              height:
+                label:
+                  en: Height (cm)
+                  fr: Hauteur (cm)
+                type: number
+                min: 0
+                default: 0
+                help:
+                  en: Package height in centimeters
+                  fr: Hauteur du colis en centimètres
+                translate: false
+                width: 1/4
               description:
                 label: Description panier
                 type: writer

site/templates/product.php

@@ -47,6 +47,9 @@
                         data-item-name="<?= $page->title()->html() ?>"
                         data-item-shippable="true"
                         data-item-weight="<?= $page->weight()->or(0) ?>"
+                        data-item-length="<?= $page->length()->or(0) ?>"
+                        data-item-width="<?= $page->width()->or(0) ?>"
+                        data-item-height="<?= $page->height()->or(0) ?>"
                         <?php
                         if($page->hasOptions()->toBool() && $page->optionValues()->isNotEmpty()):
                             $values = $page->optionValues()->split(',');