feat(system): add Excel export for dept and menu tree lists

Export flattened filtered or selected rows via backend xlsx and ListExportDropdown.

Co-authored-by: Cursor <cursoragent@cursor.com>

web-admin/src/api/admin.ts

@@ -346,6 +346,14 @@ export function fetchDeptTree(params?: { keyword?: string }) {
   })
 }
 
+export function fetchExportDepts(data: Record<string, any>) {
+  return request.post({
+    url: '/web/admin/depts/export',
+    data,
+    responseType: 'blob'
+  })
+}
+
 export function fetchCreateDept(data: {
   parentId?: string
   deptName: string
@@ -505,6 +513,14 @@ export function fetchMenuTree(params?: { keyword?: string }) {
   })
 }
 
+export function fetchExportMenus(data: Record<string, any>) {
+  return request.post({
+    url: '/web/admin/menus/export',
+    data,
+    responseType: 'blob'
+  })
+}
+
 export function fetchCreateMenu(data: {
   menuName: string
   parentId?: string