feat: enhance checkout process with cart integration and stock confirmation

app/Domains/Purchase/Requests/StorePurchaseRequest.php

@@ -19,13 +19,11 @@ class StorePurchaseRequest extends FormRequest
     {
         return [
             'status' => ['sometimes', 'string', Rule::in(['pending', 'paid', 'cancelled'])],
+            'cart_id' => ['required', 'integer', 'exists:carritos,id'],
             'dni' => ['required', 'string'],
             'telefono' => ['required', 'string'],
             'nombre_apellido' => ['required', 'string'],
             'email' => ['required', 'string', 'email'],
-            'items' => ['required', 'array', 'min:1'],
-            'items.*.producto_variante_id' => ['required', 'integer', 'exists:productos_variantes,id'],
-            'items.*.cantidad' => ['required', 'integer', 'min:1'],
         ];
     }
 }