chore(medusa,core-flows): include variant images in product export (#14886)

## Summary

**What** — What changes are introduced in this PR?

Include variant images in product exports.

**Why** — Why are these changes relevant or necessary?  

Information is incomplete.

**How** — How have these changes been implemented?

Added logic to handle constructing the wildcard columns for variant images.

**Testing** — How have these changes been tested, or how can the reviewer test the feature?

Integration tests.

---

## Examples

Provide examples or code snippets that demonstrate how this feature works, or how it can be used in practice.  
This helps with documentation and ensures maintainers can quickly understand and verify the change.

```ts
// Example usage
```

---

## Checklist

Please ensure the following before requesting a review:

- [x] I have added a **changeset** for this PR
    - Every non-breaking change should be marked as a **patch**
    - To add a changeset, run `yarn changeset` and follow the prompts
- [x] The changes are covered by relevant **tests**
- [x] I have verified the code works as intended locally
- [x] I have linked the related issue(s) if applicable

---

## Additional Context

Add any additional context, related issues, or references that might help the reviewer understand this PR.

Author: NicolasGorga

.changeset/lovely-lemons-repeat.md

@@ -0,0 +1,6 @@
+---
+"@medusajs/core-flows": patch
+"@medusajs/medusa": patch
+---
+
+chore(medusa,core-flows): include variant images in product export

integration-tests/http/__tests__/product/admin/product-export.spec.ts

@@ -306,6 +306,8 @@ medusaIntegrationTestRunner({
               "Variant Material": "",
               "Variant Metadata": "",
               "Variant Mid Code": "",
+              "Variant Image 1": "test-image.png",
+              "Variant Image 2": "test-image-2.png",
               "Variant Option 1 Name": "size",
               "Variant Option 1 Value": "large",
               "Variant Option 2 Name": "color",
@@ -365,6 +367,8 @@ medusaIntegrationTestRunner({
               "Variant Material": "",
               "Variant Metadata": "",
               "Variant Mid Code": "",
+              "Variant Image 1": "test-image.png",
+              "Variant Image 2": "test-image-2.png",
               "Variant Option 1 Name": "size",
               "Variant Option 1 Value": "small",
               "Variant Option 2 Name": "color",
@@ -424,7 +428,8 @@ medusaIntegrationTestRunner({
               "Variant Material": "",
               "Variant Metadata": "",
               "Variant Mid Code": "",
-              "Variant Thumbnail": "",
+              "Variant Image 1": "test-image.png",
+              "Variant Image 2": "test-image-2.png",
               "Variant Option 1 Name": "size",
               "Variant Option 1 Value": "large",
               "Variant Option 2 Name": "color",
@@ -516,6 +521,8 @@ medusaIntegrationTestRunner({
               "Variant Material": "",
               "Variant Metadata": "",
               "Variant Mid Code": "",
+              "Variant Image 1": "test-image.png",
+              "Variant Image 2": "test-image-2.png",
               "Variant Option 1 Name": "size",
               "Variant Option 1 Value": "large",
               "Variant Option 2 Name": "color",
@@ -576,6 +583,8 @@ medusaIntegrationTestRunner({
               "Variant Material": "",
               "Variant Metadata": "",
               "Variant Mid Code": "",
+              "Variant Image 1": "test-image.png",
+              "Variant Image 2": "test-image-2.png",
               "Variant Option 1 Name": "size",
               "Variant Option 1 Value": "small",
               "Variant Option 2 Name": "color",
@@ -699,6 +708,8 @@ medusaIntegrationTestRunner({
               "Variant Metadata": "",
               "Variant Mid Code": "",
               "Variant Thumbnail": "",
+              "Variant Image 1": "test-image.png",
+              "Variant Image 2": "test-image-2.png",
               "Variant Option 1 Name": "size",
               "Variant Option 1 Value": "large",
               "Variant Option 2 Name": "color",
@@ -790,6 +801,8 @@ medusaIntegrationTestRunner({
               "Variant Metadata": "",
               "Variant Mid Code": "",
               "Variant Thumbnail": "",
+              "Variant Image 1": "test-image.png",
+              "Variant Image 2": "test-image-2.png",
               "Variant Option 1 Name": "size",
               "Variant Option 1 Value": "large",
               "Variant Option 2 Name": "color",

packages/core/core-flows/src/product/helpers/normalize-for-export.ts

@@ -148,13 +148,23 @@ const normalizeVariantForExport = (
     {}
   )
 
+  const flattenedImages = variant.images?.reduce(
+    (acc: Record<string, string>, image, idx) => {
+      acc[beautifyKey(`variant_image_${idx + 1}`)] = image.url
+      return acc
+    },
+    {}
+  )
+
   const res = {
     ...prefixFields(variant, "variant"),
     ...flattenedPrices,
     ...flattenedOptions,
+    ...flattenedImages,
   } as any
   delete res["Variant Price Set"]
   delete res["Variant Options"]
+  delete res["Variant Images"]
 
   return res
 }

packages/medusa/src/api/admin/products/query-config.ts

@@ -75,6 +75,7 @@ export const defaultAdminProductFields = [
   "variants.prices.price_rules.value",
   "variants.prices.price_rules.attribute",
   "*variants.options",
+  "*variants.images",
   "*sales_channels",
 ]