fix: 部门列表空/职务无法启用 — fetchTree适配树形API响应, positions表加status/code/description字段

backend/app/Http/Controllers/Admin/System/PositionController.php

@@ -21,7 +21,10 @@ class PositionController extends Controller
     {
         $data = $request->validate([
             'name' => 'required|string|max:50',
+            'code' => 'nullable|string|max:50',
             'sort' => 'nullable|integer',
+            'status' => 'in:0,1',
+            'description' => 'nullable|string|max:255',
         ]);
 
         $data['store_id'] = auth()->user()->store_id;
@@ -34,7 +37,10 @@ class PositionController extends Controller
     {
         $data = $request->validate([
             'name' => 'string|max:50',
+            'code' => 'nullable|string|max:50',
             'sort' => 'nullable|integer',
+            'status' => 'in:0,1',
+            'description' => 'nullable|string|max:255',
         ]);
 
         $position->update($data);