feat(admin): 完善后台角色管理与权限同步，新增当前管理员信息接口

app/Http/Controllers/Api/V1/Admin/User/Concerns/EnsuresSuperAdminActor.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace App\Http\Controllers\Api\V1\Admin\User\Concerns;
+
+use App\Models\AdminUser;
+use App\Lottery\ErrorCode;
+use App\Support\ApiResponse;
+use Illuminate\Http\Request;
+use Illuminate\Http\JsonResponse;
+
+trait EnsuresSuperAdminActor
+{
+    protected function ensureSuperAdmin(Request $request): ?JsonResponse
+    {
+        /** @var AdminUser $actor */
+        $actor = $request->lotteryAdmin();
+        if (! $actor->isSuperAdmin()) {
+            return ApiResponse::error(
+                '仅超级管理员可管理角色',
+                ErrorCode::AdminForbidden->value,
+                null,
+                403,
+            );
+        }
+
+        return null;
+    }
+}