对接微信支付

packages/shared-types/src/config.ts

@@ -7,6 +7,7 @@ export interface AppConfig {
   wechatAuthEnabled: boolean;
   wechatPayEnabled: boolean;
   wxAppId: string;
+  wxMchId: string;
   /** OSS_ENABLED=true 且 AccessKey/Bucket 齐全时走阿里云直传 */
   ossEnabled: boolean;
 }
@@ -25,6 +26,7 @@ export function loadAppConfig(env?: Record<string, string | undefined>): AppConf
     wechatAuthEnabled: e.WECHAT_AUTH_ENABLED === 'true',
     wechatPayEnabled: e.WECHAT_PAY_ENABLED === 'true' || e.MOCK_PAY === 'false',
     wxAppId: e.WX_APP_ID ?? '',
+    wxMchId: e.WX_MCH_ID ?? '',
     ossEnabled: e.OSS_ENABLED === 'true',
   };
 }