fix: 修复保存种类属性数据接收问题

src/main/java/com/example/building/controller/ProductController.java

@@ -156,12 +156,16 @@ public class ProductController {
     @PostMapping("/categories/{categoryId}/attributes")
     public Result<Void> saveCategoryAttributes(
             @PathVariable String categoryId,
-            @RequestBody List attributes,
+            @RequestBody Map<String, Object> body,
             @RequestHeader(value = "X-User-Role", required = false) String role) {
         if (!"admin".equals(role)) {
             return Result.error("只有管理员可以操作");
         }
-        categoryAttributeService.saveAttributes(categoryId, attributes);
+        List attrs = (List) body.get("attributes");
+        if (attrs == null) {
+            attrs = (List) body.get("list");
+        }
+        categoryAttributeService.saveAttributes(categoryId, attrs);
         return Result.success();
     }