feat: enhance purchase detail handling to support cart items and improve resource structure

app/Domains/Purchase/Controllers/PurchaseController.php

@@ -19,7 +19,6 @@ class PurchaseController extends Controller
     {
         return PurchaseResource::collection(
             Purchase::query()
-                ->with(['items.variant.product', 'items.variant.definitions.productAttribute.attribute'])
                 ->where('tenant_codigo', $tenant->codigo)
                 ->where('user_id', $request->user()->id)
                 ->when($request->query('status'), function ($query, $status) {
@@ -48,7 +47,7 @@ class PurchaseController extends Controller
         $compra = $this->resolveScopedPurchase($tenant, $request->user()->id, $compra);
 
         return PurchaseResource::make(
-            $compra->loadMissing(['items.variant.product', 'items.variant.definitions.productAttribute.attribute'])
+            $compra->loadMissing($this->purchaseDetailRelations())
         );
     }
 
@@ -140,4 +139,19 @@ class PurchaseController extends Controller
 
         return $purchase;
     }
+
+    /**
+     * @return list<string>
+     */
+    protected function purchaseDetailRelations(): array
+    {
+        return [
+            'items.variant.product',
+            'items.variant.definitions.productAttribute.attribute',
+            'items.variant.attachments',
+            'cart.items.variant.product',
+            'cart.items.variant.definitions.productAttribute.attribute',
+            'cart.items.variant.attachments',
+        ];
+    }
 }