搭建消息告警模块以及跨网推送服务，支持企微，飞书，钉钉通知

Service/Interface/Inspection/IAlertNotifier.cs

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+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Service.Interface
+{
+    /// <summary>
+    /// 通知消息（Notifier 统一入参：与具体渠道报文格式解耦）
+    /// </summary>
+    public class AlertNotifyMessage
+    {
+        /// <summary>
+        /// 消息标题
+        /// </summary>
+        public string Title { get; set; } = "设备告警";
+
+        /// <summary>
+        /// 消息正文（markdown 语法，各 Notifier 按需降级为纯文本）
+        /// </summary>
+        public string Content { get; set; } = string.Empty;
+
+        /// <summary>
+        /// @ 手机号列表（钉钉/企微支持；飞书文本追加展示）
+        /// </summary>
+        public List<string> AtMobiles { get; set; } = new();
+    }
+
+    /// <summary>
+    /// 通知发送结果
+    /// </summary>
+    public class NotifyResult
+    {
+        /// <summary>
+        /// 是否成功
+        /// </summary>
+        public bool Success { get; set; }
+
+        /// <summary>
+        /// 错误信息（失败时填写，含渠道响应原文摘要）
+        /// </summary>
+        public string? ErrorMsg { get; set; }
+
+        public static NotifyResult Ok() => new() { Success = true };
+        public static NotifyResult Fail(string msg) => new() { Success = false, ErrorMsg = msg };
+    }
+
+    /// <summary>
+    /// 告警通知渠道发送器抽象（一期：飞书/钉钉/企微 Webhook 机器人）
+    /// 扩展新渠道（如短信网关）只需实现本接口并在 DependencyInjection.AddAlertNotification 注册，调用方零改动
+    /// </summary>
+    public interface IAlertNotifier
+    {
+        /// <summary>
+        /// 本发送器支持的渠道类型
+        /// </summary>
+        Model.Entity.Inspection.NotifyChannelTypeEnum ChannelType { get; }
+
+        /// <summary>
+        /// 发送消息
+        /// </summary>
+        /// <param name="message">统一通知消息</param>
+        /// <param name="webhookUrl">渠道 Webhook 地址</param>
+        /// <param name="secret">加签密钥（可空：未开启加签）</param>
+        /// <param name="ct">取消令牌</param>
+        Task<NotifyResult> SendAsync(AlertNotifyMessage message, string webhookUrl, string? secret, CancellationToken ct = default);
+    }
+}