{"service": "糖丸补给站 - 全链路服务", "endpoints": {"POST /webhook": "接收 SmsForwarder 收款通知", "POST /redeem": "兑换码核验（body: code, email）", "POST /balance": "查询余额（body: email）", "POST /test": "模拟测试（body: msg 或 amount）", "GET /health": "健康检查"}}