feat: multiple improvements and bug fixes

- Add gift card redemption feature
- Resolve custom range selection issue in overview
- Allow log page size to be modified
- Add subscription path change notification
- Improve dynamic node rate feature
- Support markdown documentation display for plugins
- Reduce power reset service logging
- Fix backend version number not updating after update

app/Http/Requests/User/GiftCardRedeemRequest.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace App\Http\Requests\User;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class GiftCardRedeemRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     *
+     * @return bool
+     */
+    public function authorize()
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return [
+            'code' => 'required|string|min:8|max:32',
+        ];
+    }
+
+    /**
+     * Get custom messages for validator errors.
+     *
+     * @return array
+     */
+    public function messages()
+    {
+        return [
+            'code.required' => '请输入兑换码',
+            'code.min' => '兑换码长度不能少于8位',
+            'code.max' => '兑换码长度不能超过32位',
+        ];
+    }
+}