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/common/alert/alert.module.ts

@@ -0,0 +1,17 @@
+import { Global, Module } from '@nestjs/common';
+import { RedisModule } from '../redis/redis.module';
+import { AlertService } from './alert.service';
+import { PayRedeemAnomalyService } from './pay-redeem-anomaly.service';
+import { WecomWebhookAlertService } from '../../integrations/wecom/wecom-webhook-alert.service';
+
+/**
+ * 运营告警（企微 Webhook）。Global 以便 Filter / 各业务 Module 注入。
+ * Webhook 发送器在本 Module 注册，避免与 WecomModule↔Common 循环依赖。
+ */
+@Global()
+@Module({
+  imports: [RedisModule],
+  providers: [WecomWebhookAlertService, AlertService, PayRedeemAnomalyService],
+  exports: [WecomWebhookAlertService, AlertService, PayRedeemAnomalyService],
+})
+export class AlertModule {}