feat: 支付闭环 + 运营助手 Tool Calling + 管理后台完善

- 支付系统：微信支付 mock 自动完成、NATIVE 扫码支付、JSAPI 集成
- 运营助手：Tool Calling 架构，19 个可执行工具，AI 驱动操作
- 角色管理：表格布局 + Dialog 表单 + 权限勾选
- 配置统一：config.ts 单一数据源
- API 审计：补齐 status toggle / comments 端点
- 暗黑模式硬件编码颜色全部替换为 CSS 变量

backend/src/modules/orders/orders.service.ts

@@ -9,7 +9,7 @@ export class OrdersService {
     private paymentService: PaymentService,
   ) {}
 
-  async create(userId: number, data: { amount: number; planType: string; payChannel?: string }) {
+  async create(userId: number, data: { amount: number; planType: string; payChannel?: string; tradeType?: string; openid?: string }) {
     const orderNo = `YZR${Date.now()}${Math.random().toString(36).slice(2, 8).toUpperCase()}`;
 
     const order = await this.prisma.order.create({
@@ -33,7 +33,13 @@ export class OrdersService {
           description: planLabels[data.planType] || '宇之然AI会员充值',
           outTradeNo: orderNo,
           amount: data.amount,
+          tradeType: (data.tradeType as 'JSAPI' | 'NATIVE' | 'MWEB') || 'NATIVE',
+          openid: data.openid,
         });
+        // Mock 模式下自动完成支付闭环（NATIVE mock 无需扫码）
+        if (payResult?.codeUrl === 'mock://pay') {
+          await this.paymentService.completeMockPayment(orderNo);
+        }
         return { order, payResult };
       } catch {
         return { order, payResult: null };