fix: valider data.image.src dans uploadProductImage

src/lib/shopify.ts

@@ -76,5 +76,8 @@ export async function uploadProductImage(
   }
 
   const data = await res.json()
+  if (!data.image?.src) {
+    throw new Error('Shopify response invalide : champ image.src manquant')
+  }
   return { url: data.image.src as string }
 }