feat: Claude Code 原生 Windows 通知(C# / .NET 10 + Avalonia 12)
为 Claude Code 提供原生 Windows toast 通知:点击跳回原窗口、切回 Windows Terminal 标签、跨虚拟桌面、调用方图标、非阻塞投递;NativeAOT 单文件分发。
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using System;
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using System.Diagnostics;
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using System.IO;
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using System.Text.Json;
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using System.Threading;
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using Notify.Serialization;
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namespace Notify.Ipc;
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/// <summary>
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/// 基于落盘队列的非阻塞投递:CLI 写文件后立即返回,Host 监视目录消费
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///
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/// 取代命名管道,避免 CLI 在 Host 冷启动时被阻塞而拖住 Claude Code
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/// </summary>
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public static class NotificationSpool
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{
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public static readonly string Dir =
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Path.Combine(Path.GetTempPath(), "claude-notify-spool");
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// CLI 侧:写入一条请求,必要时拉起 Host,全程不阻塞
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public static void Deliver(NotifyMessage message)
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{
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try
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{
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Directory.CreateDirectory(Dir);
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// 先写 .tmp 再原子改名为 .json,避免 Host 读到半截文件
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var id = Guid.NewGuid().ToString("N");
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var tmp = Path.Combine(Dir, id + ".tmp");
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var final = Path.Combine(Dir, id + ".json");
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File.WriteAllText(tmp, JsonSerializer.Serialize(message, AppJsonContext.Default.NotifyMessage));
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File.Move(tmp, final);
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}
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catch
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{
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// 写入失败则放弃这条通知,绝不影响调用方
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}
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EnsureHostRunning();
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}
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// Host 未运行则拉起(不等待);运行中则什么都不做
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private static void EnsureHostRunning()
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{
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try
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{
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if (Mutex.TryOpenExisting(IpcConstants.HostMutexName, out var existing))
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{
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existing.Dispose();
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return;
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}
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}
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catch
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{
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// 打不开就当作未运行,继续尝试拉起
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}
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try
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{
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var exe = Environment.ProcessPath;
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if (exe is null)
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{
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return;
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}
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// 必须用 UseShellExecute=true 让 host 彻底脱离本进程的标准句柄
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// 否则常驻 host 会继承并攥住钩子的 stdout 管道,导致 Claude Code
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// 等不到管道 EOF 而卡在 "running stop hook"
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Process.Start(new ProcessStartInfo
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{
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FileName = exe,
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Arguments = "host",
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UseShellExecute = true,
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WindowStyle = ProcessWindowStyle.Hidden,
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});
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}
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catch
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{
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// 拉起失败则该通知会在下次 Host 启动时由 DrainExisting 补弹
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}
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}
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// Host 侧:消费单个 spool 文件并删除
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public static NotifyMessage? ReadAndRemove(string path)
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{
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try
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{
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var json = File.ReadAllText(path);
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File.Delete(path);
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return JsonSerializer.Deserialize(json, AppJsonContext.Default.NotifyMessage);
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}
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catch
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{
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return null;
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}
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}
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// Host 启动时把已有的 spool 文件补弹一遍
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public static void DrainExisting(Action<NotifyMessage> handler)
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{
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try
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{
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if (!Directory.Exists(Dir))
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{
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return;
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}
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foreach (var path in Directory.GetFiles(Dir, "*.json"))
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{
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if (ReadAndRemove(path) is { } msg)
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{
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handler(msg);
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}
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}
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}
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catch
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{
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// 忽略
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}
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}
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}
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