update pay function

src/services/categoryService.ts

@@ -87,16 +87,18 @@ export const fetchCategoryTree = async (
  * 获取特定节点及其子树
  * @param path 节点完整路径（用 | 分隔）
  * @param source 数据源类型 ('SMM' | 'Mysteel')
+ * @param maxDepth 返回的子树最大层级深度（默认1层，只返回直接子节点）
  * @returns 节点数据及其子树
  */
 export const fetchCategoryNode = async (
   path: string,
-  source: 'SMM' | 'Mysteel'
+  source: 'SMM' | 'Mysteel',
+  maxDepth: number = 1
 ): Promise<TreeNode> => {
   try {
     const encodedPath = encodeURIComponent(path);
     const response = await fetch(
-      `/category-api/api/category-tree/node?path=${encodedPath}&source=${source}`,
+      `/category-api/api/category-tree/node?path=${encodedPath}&source=${source}&max_depth=${maxDepth}`,
       {
         method: 'GET',
         headers: {