feat: add vip payment and member center

app/Http/Requests/CreateVipPaymentOrderRequest.php

@@ -0,0 +1,46 @@
+<?php
+
+/**
+ * 文件功能：创建 VIP 支付订单请求
+ * 负责校验前台用户发起 VIP 购买时提交的会员等级参数
+ */
+
+namespace App\Http\Requests;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class CreateVipPaymentOrderRequest extends FormRequest
+{
+    /**
+     * 判断当前用户是否允许发起购买
+     */
+    public function authorize(): bool
+    {
+        return $this->user() !== null;
+    }
+
+    /**
+     * 获取字段校验规则
+     *
+     * @return array<string, array<int, string>>
+     */
+    public function rules(): array
+    {
+        return [
+            'vip_level_id' => ['required', 'integer', 'exists:vip_levels,id'],
+        ];
+    }
+
+    /**
+     * 获取中文错误提示
+     *
+     * @return array<string, string>
+     */
+    public function messages(): array
+    {
+        return [
+            'vip_level_id.required' => '请选择要购买的 VIP 等级',
+            'vip_level_id.exists' => '所选 VIP 等级不存在或已被删除',
+        ];
+    }
+}