1. 调整异常处理类

2. 统一职责分工
3. 清除多余代码

app/validation/SystemConfigValidator.php

@@ -0,0 +1,23 @@
+<?php
+declare(strict_types=1);
+
+namespace app\validation;
+
+use support\validation\Validator;
+
+class SystemConfigValidator extends Validator
+{
+    protected array $rules = [
+        'config_key' => 'string|max:100',
+        'config_value' => 'nullable|string',
+    ];
+
+    protected array $messages = [];
+
+    protected array $attributes = [
+        'config_key' => '配置项键名',
+        'config_value' => '配置项值',
+    ];
+
+    protected array $scenes = [];
+}