refactor: centralize wechat notification dispatch

notification-dispatcher.mjs

@@ -0,0 +1,30 @@
+export function createNotificationDispatcher({ sendWechatTextToUser, logger = console } = {}) {
+  const sendWechat = async (userId, text) => {
+    if (typeof sendWechatTextToUser !== 'function') return false;
+    await sendWechatTextToUser(userId, text);
+    return true;
+  };
+
+  return {
+    async sendRechargeSuccess({ userId, title, body, dedupeKey = null }) {
+      const sent = await sendWechat(userId, `${title}\n${body}`.trim());
+      logger.info?.('Notification dispatch:', {
+        type: 'recharge_success',
+        userId,
+        dedupeKey,
+        sent,
+      });
+      return sent;
+    },
+    async sendScheduleNotification({ userId, text }) {
+      const sent = await sendWechat(userId, text);
+      logger.info?.('Notification dispatch:', {
+        type: 'schedule_notification',
+        userId,
+        dedupeKey: null,
+        sent,
+      });
+      return sent;
+    },
+  };
+}