feat(ops): WeCom webhook alerts for pay/redeem anomalies

Add outbound group-bot alerts, rate/amount rules, stuck-order cron, HQ test button, and health db/redis checks.

Co-authored-by: Cursor <cursoragent@cursor.com>

server/dukang-api/src/callbacks/wechat-refund.controller.ts

@@ -1,10 +1,14 @@
 import { Controller, Headers, Post, Req, Res } from '@nestjs/common';
 import type { Request, Response } from 'express';
 import { PrismaService } from '../common/prisma/prisma.module';
+import { AlertService } from '../common/alert/alert.service';
 
 @Controller('callbacks/wechat')
 export class WechatRefundCallbackController {
-  constructor(private readonly prisma: PrismaService) {}
+  constructor(
+    private readonly prisma: PrismaService,
+    private readonly alert: AlertService,
+  ) {}
 
   @Post('refund')
   async refundNotify(
@@ -38,6 +42,14 @@ export class WechatRefundCallbackController {
       return res.status(200).json({ code: 'SUCCESS', message: '成功' });
     } catch (err) {
       const message = err instanceof Error ? err.message : '处理失败';
+      this.alert.notify({
+        level: 'P0',
+        category: 'pay',
+        title: '退款回调处理失败',
+        detail: message,
+        dedupeKey: `refund_callback_fail|${message.slice(0, 40)}`,
+        dedupeTtlSec: 120,
+      });
       return res.status(500).json({ code: 'FAIL', message });
     }
   }