feat: 优化休息提醒弹窗，去除白框闪现

.gitignore

@@ -4,22 +4,6 @@
 [Bb]in/
 [Oo]bj/
 [Oo]ut/
-
-# Visual Studio 用户特定文件
-*.rsuser
-*.suo
-*.user
-*.userosscache
-*.sln.docstates
-
-# Visual Studio 缓存/选项目录
-.vs/
-.vscode/
-
-# Visual Studio 代码分析结果
-*.sln.iml
-
-# 构建结果
 [Dd]ebug/
 [Dd]ebugPublic/
 [Rr]elease/
@@ -30,17 +14,25 @@ x86/
 [Aa][Rr][Mm]/
 [Aa][Rr][Mm]64/
 bld/
-[Bb]in/
-[Oo]bj/
 [Ll]og/
 [Ll]ogs/
-
+[Dd]ist/
-# .NET Core
-project.lock.json
-project.fragment.lock.json
 artifacts/
 
-# NuGet 包
+# Visual Studio / IDE
+.vs/
+.vscode/
+.idea/
+*.rsuser
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+*.sln.iml
+
+# .NET Core / NuGet
+project.lock.json
+project.fragment.lock.json
 *.nupkg
 *.snupkg
 **/packages/*
@@ -52,29 +44,14 @@ artifacts/
 [Tt]est[Rr]esult*/
 [Bb]uild[Ll]og.*
 
-# .NET Core 项目文件
-project.lock.json
-project.fragment.lock.json
-artifacts/
-
-# Rider
-.idea/
-*.sln.iml
-
-# VS Code
-.vscode/
-
-# 用户特定文件
-*.user
-*.suo
-*.userosscache
-*.sln.docstates
-
 # 临时文件
 *.tmp
 *.temp
 *.log
 *.cache
+*.bak
+*.swp
+*~
 
 # 操作系统文件
 .DS_Store
@@ -82,10 +59,5 @@ Thumbs.db
 ehthumbs.db
 Desktop.ini
 
-# 备份文件
-*.bak
-*.swp
-*~
-
 # 设置文件（如果包含敏感信息）
 # settings.json

ActivityMonitor.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Windows.Forms;
+using Microsoft.Win32;
 
 namespace TimerApp
 {
@@ -10,13 +11,19 @@ namespace TimerApp
         Resting
     }
 
-    public class ActivityMonitor
+    public sealed class ActivityMonitor : IDisposable
     {
-        private System.Windows.Forms.Timer _timer;
+        private CancellationTokenSource? _cts;
-        private DateTime _lastWorkStartTime;
+        private readonly object _lock = new object();
         private TimeSpan _accumulatedWorkTime;
-        private DateTime _restStartTime;
+        private int _restElapsedSeconds;
-        private int _restElapsedSeconds; // 休息已过秒数（用于避免时间计算导致的跳变）
+        private bool _isPaused;
+        private bool _disposed;
+        
+        // 状态检测缓存
+        private int _checkTickCounter;
+        private const int CheckIntervalTicks = 3; // 每3秒检查一次空闲状态
+        private long _cachedIdleMs;
 
         // 配置 (默认值)
         public TimeSpan WorkDuration { get; set; } = TimeSpan.FromMinutes(20);
@@ -24,41 +31,68 @@ namespace TimerApp
         public TimeSpan IdleThreshold { get; set; } = TimeSpan.FromSeconds(30);
 
         public MonitorState CurrentState { get; private set; } = MonitorState.Idle;
+        public bool IsPaused
+        {
+            get { lock (_lock) return _isPaused; }
+            private set { lock (_lock) _isPaused = value; }
+        }
 
         // 事件
-        public event EventHandler<TimeSpan> WorkProgressChanged; // 剩余工作时间
+        public event EventHandler<TimeSpan>? WorkProgressChanged; // 剩余工作时间
-        public event EventHandler<TimeSpan> RestProgressChanged; // 剩余休息时间
+        public event EventHandler<TimeSpan>? RestProgressChanged; // 剩余休息时间
-        public event EventHandler RestStarted;
+        public event EventHandler? RestStarted;
-        public event EventHandler RestEnded;
+        public event EventHandler? RestEnded;
-        public event EventHandler StateChanged;
+        public event EventHandler? StateChanged;
 
         public ActivityMonitor()
         {
-            _timer = new System.Windows.Forms.Timer();
-            _timer.Interval = 1000; // 1秒检查一次
-            _timer.Tick += Timer_Tick;
         }
 
         public void Start()
         {
-            _timer.Start();
+            lock (_lock)
-            ResetWork();
+            {
+                StopInternal();
+                
+                _cts = new CancellationTokenSource();
+                var token = _cts.Token;
+                
+                // 启动时立即触发一次检测
+                _checkTickCounter = CheckIntervalTicks;
+                ResetWork();
+                
+                Task.Run(() => MonitorLoop(token), token);
+            }
         }
 
         public void Stop()
         {
-            _timer.Stop();
+            lock (_lock)
+            {
+                StopInternal();
+            }
+        }
+
+        private void StopInternal()
+        {
+            if (_cts != null)
+            {
+                _cts.Cancel();
+                _cts.Dispose();
+                _cts = null;
+            }
         }
 
         private void ResetWork()
         {
+            // Must be called within lock
             _accumulatedWorkTime = TimeSpan.Zero;
-            _lastWorkStartTime = DateTime.Now;
             ChangeState(MonitorState.Idle);
         }
 
         private void ChangeState(MonitorState newState)
         {
+            // Must be called within lock
             if (CurrentState != newState)
             {
                 CurrentState = newState;
@@ -66,126 +100,214 @@ namespace TimerApp
             }
         }
 
-        private void Timer_Tick(object sender, EventArgs e)
+        private async Task MonitorLoop(CancellationToken token)
         {
-            long idleMs = NativeMethods.GetIdleTime();
+            while (!token.IsCancellationRequested)
-            TimeSpan idleTime = TimeSpan.FromMilliseconds(idleMs);
-
-            if (CurrentState == MonitorState.Resting)
             {
-                // 休息模式逻辑
+                try
-                // 使用计数器而不是时间差，避免秒数跳变
-                _restElapsedSeconds++;
-                int totalRestSeconds = (int)RestDuration.TotalSeconds;
-                int remainingSeconds = totalRestSeconds - _restElapsedSeconds;
-
-                if (remainingSeconds <= 0)
                 {
-                    // 休息结束
+                    await Task.Delay(1000, token);
-                    RestEnded?.Invoke(this, EventArgs.Empty);
+                    OnTick();
-                    ResetWork(); // 重新开始工作周期
                 }
-                else
+                catch (OperationCanceledException)
                 {
-                    TimeSpan remainingRest = TimeSpan.FromSeconds(remainingSeconds);
+                    break;
-                    RestProgressChanged?.Invoke(this, remainingRest);
                 }
-            }
+                catch (Exception ex)
-            else
-            {
-                // 工作/空闲模式逻辑
-                if (idleTime > IdleThreshold)
                 {
-                    // 用户离开了
+                    Logger.LogError("Error in ActivityMonitor MonitorLoop", ex);
-                    if (CurrentState == MonitorState.Working)
-                    {
-                        // 如果正在工作，但离开了，暂停工作计时？
-                        // 简单起见，如果离开时间过长，可以视为一种“休息”，或者只是暂停累积
-                        // 这里我们简单处理：如果空闲时间超过阈值，状态变为空闲
-                        ChangeState(MonitorState.Idle);
-                    }
-
-                    // 如果在 Idle 状态，且空闲时间非常长（比如超过了休息时间），
-                    // 是否应该重置工作计时器？
-                    // 假设用户去开会了1小时，回来应该重新计算20分钟。
-                    if (idleTime > RestDuration)
-                    {
-                         _accumulatedWorkTime = TimeSpan.Zero;
-                    }
-                }
-                else
-                {
-                    // 用户在活动
-                    if (CurrentState == MonitorState.Idle)
-                    {
-                        // 从空闲变为工作
-                        ChangeState(MonitorState.Working);
-                        _lastWorkStartTime = DateTime.Now;
-                    }
-
-                    // 累加工作时间
-                    // 简单的累加逻辑：这一秒是工作的
-                    _accumulatedWorkTime += TimeSpan.FromSeconds(1);
-
-                    // 检查是否达到工作时长
-                    TimeSpan remainingWork = WorkDuration - _accumulatedWorkTime;
-
-                    if (remainingWork <= TimeSpan.Zero)
-                    {
-                        // 触发休息
-                        _restStartTime = DateTime.Now;
-                        _restElapsedSeconds = 0; // 重置休息计数器
-                        ChangeState(MonitorState.Resting);
-                        RestStarted?.Invoke(this, EventArgs.Empty);
-                    }
-                    else
-                    {
-                        WorkProgressChanged?.Invoke(this, remainingWork);
-                    }
                 }
             }
         }
 
-        // 用于强制重置或测试
+        private void OnTick()
-        public void ForceRest()
         {
-             _restStartTime = DateTime.Now;
+            // 在锁外执行耗时的系统检测
-             _restElapsedSeconds = 0; // 重置休息计数器
+            long idleMs = 0;
-             ChangeState(MonitorState.Resting);
+            bool shouldUpdate = false;
-             RestStarted?.Invoke(this, EventArgs.Empty);
+
+            lock (_lock)
+            {
+                // 如果处于暂停状态，不处理计时逻辑
+                if (_isPaused) return;
+
+                // 检查是否需要更新状态
+                _checkTickCounter++;
+                if (_checkTickCounter >= CheckIntervalTicks)
+                {
+                    _checkTickCounter = 0;
+                    // 需要更新，但在锁外进行
+                    shouldUpdate = true; 
+                }
+                
+                // 如果不需要更新，直接使用缓存值
+                if (!shouldUpdate)
+                {
+                     idleMs = _cachedIdleMs;
+                }
+            }
+
+            // 在锁外执行实际的检测
+            if (shouldUpdate)
+            {
+                idleMs = NativeMethods.GetIdleTime();
+                
+                // 更新缓存
+                lock (_lock)
+                {
+                    _cachedIdleMs = idleMs;
+                }
+            }
+
+            lock (_lock)
+            {
+                // 再次检查暂停状态
+                if (_isPaused) return;
+
+                // 使用（可能是新更新的）缓存值
+                idleMs = _cachedIdleMs;
+                TimeSpan idleTime = TimeSpan.FromMilliseconds(idleMs);
+
+                if (CurrentState == MonitorState.Resting)
+                {
+                    // 休息模式逻辑
+                    // 使用计数器而不是时间差，避免秒数跳变
+                    _restElapsedSeconds++;
+                    int totalRestSeconds = (int)RestDuration.TotalSeconds;
+                    int remainingSeconds = totalRestSeconds - _restElapsedSeconds;
+
+                    if (remainingSeconds <= 0)
+                    {
+                        // 休息结束
+                        RestEnded?.Invoke(this, EventArgs.Empty);
+                        ResetWork(); // 重新开始工作周期
+                    }
+                    else
+                    {
+                        TimeSpan remainingRest = TimeSpan.FromSeconds(remainingSeconds);
+                        RestProgressChanged?.Invoke(this, remainingRest);
+                    }
+                }
+                else
+                {
+                    // 工作/空闲模式逻辑
+                    bool isUserInactive = idleTime > IdleThreshold;
+
+                    if (isUserInactive)
+                    {
+                        // 用户确实离开了 -> 进入空闲状态
+                        if (CurrentState == MonitorState.Working)
+                        {
+                            ChangeState(MonitorState.Idle);
+                        }
+
+                        // 如果在 Idle 状态，且空闲时间非常长（比如超过了休息时间），
+                        // 重置工作计时器
+                        if (idleTime > RestDuration)
+                        {
+                            _accumulatedWorkTime = TimeSpan.Zero;
+                        }
+                    }
+                    else
+                    {
+                        // 用户在活动
+                        if (CurrentState == MonitorState.Idle)
+                        {
+                            // 从空闲变为工作
+                            ChangeState(MonitorState.Working);
+                        }
+
+                        // 正常工作：累加时间
+                        _accumulatedWorkTime += TimeSpan.FromSeconds(1);
+
+                        // 检查是否达到工作时长
+                        TimeSpan remainingWork = WorkDuration - _accumulatedWorkTime;
+
+                        if (remainingWork <= TimeSpan.Zero)
+                        {
+                            // 触发休息
+                            _restElapsedSeconds = 0; // 重置休息计数器
+                            ChangeState(MonitorState.Resting);
+                            RestStarted?.Invoke(this, EventArgs.Empty);
+                        }
+                        else
+                        {
+                            WorkProgressChanged?.Invoke(this, remainingWork);
+                        }
+                    }
+                }
+            }
         }
 
         public void RefreshStatus()
         {
-             if (CurrentState == MonitorState.Working)
+            lock (_lock)
-             {
+            {
-                 TimeSpan remaining = WorkDuration - _accumulatedWorkTime;
+                 if (CurrentState == MonitorState.Working)
-                 WorkProgressChanged?.Invoke(this, remaining);
+                 {
-             }
+                     TimeSpan remaining = WorkDuration - _accumulatedWorkTime;
-             else if (CurrentState == MonitorState.Resting)
+                     WorkProgressChanged?.Invoke(this, remaining);
-             {
+                 }
-                 // 使用计数器计算剩余时间，保持一致性
+                 else if (CurrentState == MonitorState.Resting)
-                 int totalRestSeconds = (int)RestDuration.TotalSeconds;
+                 {
-                 int remainingSeconds = totalRestSeconds - _restElapsedSeconds;
+                     int totalRestSeconds = (int)RestDuration.TotalSeconds;
-                 if (remainingSeconds < 0) remainingSeconds = 0;
+                     int remainingSeconds = totalRestSeconds - _restElapsedSeconds;
-                 TimeSpan remaining = TimeSpan.FromSeconds(remainingSeconds);
+                     if (remainingSeconds < 0) remainingSeconds = 0;
-                 RestProgressChanged?.Invoke(this, remaining);
+                     TimeSpan remaining = TimeSpan.FromSeconds(remainingSeconds);
-             }
+                     RestProgressChanged?.Invoke(this, remaining);
+                 }
+            }
         }
 
         public void Restart()
         {
-            _accumulatedWorkTime = TimeSpan.Zero;
+            lock (_lock)
-            _lastWorkStartTime = DateTime.Now;
+            {
+                _accumulatedWorkTime = TimeSpan.Zero;
+                _isPaused = false;
                 
-            // Ensure timer is running
+                // Force state to Working since user manually restarted
-            if (!_timer.Enabled) _timer.Start();
+                ChangeState(MonitorState.Working);
 
-            // Force state to Working since user manually restarted
+                // Immediately refresh UI to show full duration
-            ChangeState(MonitorState.Working);
+                RefreshStatus();
-
+            }
-            // Immediately refresh UI to show full duration
-            RefreshStatus();
         }
+
+        public void Pause()
+        {
+            lock (_lock)
+            {
+                if (!_isPaused && CurrentState != MonitorState.Idle)
+                {
+                    _isPaused = true;
+                    StateChanged?.Invoke(this, EventArgs.Empty);
+                }
+            }
+        }
+
+        public void Resume()
+        {
+            lock (_lock)
+            {
+                if (_isPaused)
+                {
+                    _isPaused = false;
+                    StateChanged?.Invoke(this, EventArgs.Empty);
+                    RefreshStatus();
+                }
+            }
+        }
+
+        public void Dispose()
+        {
+            if (_disposed) return;
+            _disposed = true;
+
+            // SystemEvents.PowerModeChanged -= OnPowerModeChanged;
+            Stop();
+            GC.SuppressFinalize(this);
+        }
+
     }
 }

AppSettings.cs

@@ -10,17 +10,39 @@ namespace TimerApp
         public int RestMinutes { get; set; } = 1;
         public int IdleThresholdSeconds { get; set; } = 30;
         public bool IsDarkMode { get; set; } = true;
+        public bool HasShownMinimizeTip { get; set; } = false;
 
-        private static string ConfigPath => Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "settings.json");
+        private static string LegacyConfigPath => Path.Combine(AppContext.BaseDirectory, "settings.json");
+
+        private static string ConfigPath
+        {
+            get
+            {
+                string dir = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "TimerApp");
+                return Path.Combine(dir, "settings.json");
+            }
+        }
+
+        private static string EffectiveConfigPath => PortableMode.IsPortable ? LegacyConfigPath : ConfigPath;
 
         public static AppSettings Load()
         {
             try
             {
-                if (File.Exists(ConfigPath))
+                string path;
+                if (PortableMode.IsPortable)
                 {
-                    string json = File.ReadAllText(ConfigPath);
+                    path = LegacyConfigPath;
-                    return JsonSerializer.Deserialize<AppSettings>(json);
+                }
+                else
+                {
+                    path = File.Exists(ConfigPath) ? ConfigPath : LegacyConfigPath;
+                }
+
+                if (File.Exists(path))
+                {
+                    string json = File.ReadAllText(path);
+                    return JsonSerializer.Deserialize<AppSettings>(json) ?? new AppSettings();
                 }
             }
             catch
@@ -34,8 +56,12 @@ namespace TimerApp
         {
             try
             {
+                string path = EffectiveConfigPath;
+                string? dir = Path.GetDirectoryName(path);
+                if (!string.IsNullOrWhiteSpace(dir))
+                    Directory.CreateDirectory(dir);
                 string json = JsonSerializer.Serialize(this, new JsonSerializerOptions { WriteIndented = true });
-                File.WriteAllText(ConfigPath, json);
+                File.WriteAllText(path, json);
             }
             catch
             {

IconGenerator.cs

@@ -1,66 +1,149 @@
 using System;
 using System.Drawing;
 using System.Drawing.Drawing2D;
+using System.Drawing.Imaging;
 using System.IO;
+using System.Runtime.InteropServices;
 
 namespace TimerApp
 {
     public static class IconGenerator
     {
-        public static Icon GenerateClockIcon()
+        [DllImport("user32.dll", SetLastError = true)]
+        private static extern bool DestroyIcon(IntPtr hIcon);
+
+        public static Icon GenerateClockIcon(int size = 64)
         {
-            int size = 64;
+            if (size < 16)
+                size = 16;
+
             using (Bitmap bmp = new Bitmap(size, size))
             using (Graphics g = Graphics.FromImage(bmp))
             {
                 g.SmoothingMode = SmoothingMode.AntiAlias;
                 g.Clear(Color.Transparent);
 
-                // 绘制闹钟主体
+                DrawClock(g, size);
-                int margin = 4;
-                int clockSize = size - margin * 2;
-                Rectangle rect = new Rectangle(margin, margin, clockSize, clockSize);
 
-                // 外圈
-                using (Pen pen = new Pen(Color.White, 4))
-                {
-                    g.DrawEllipse(pen, rect);
-                }
-
-                // 两个耳朵 (闹钟铃)
-                using (Brush earBrush = new SolidBrush(Color.White))
-                {
-                    // 左耳
-                    g.FillPie(earBrush, 0, 0, size/2, size/2, 200, 50);
-                    // 右耳
-                    g.FillPie(earBrush, size/2, 0, size/2, size/2, 290, 50);
-                }
-
-                // 重绘外圈盖住耳朵连接处
-                using (Brush bgBrush = new SolidBrush(Color.FromArgb(30, 30, 30))) // 深色背景
-                {
-                    g.FillEllipse(bgBrush, rect);
-                }
-                using (Pen pen = new Pen(Color.White, 3))
-                {
-                    g.DrawEllipse(pen, rect);
-                }
-
-                // 指针
-                Point center = new Point(size / 2, size / 2);
-                using (Pen handPen = new Pen(Color.LightGreen, 3))
-                {
-                    handPen.EndCap = LineCap.Round;
-                    // 时针
-                    g.DrawLine(handPen, center, new Point(center.X + 10, center.Y - 10));
-                    // 分针
-                    g.DrawLine(handPen, center, new Point(center.X, center.Y - 18));
-                }
-
-                // 转换为图标
-                // 注意：GetHicon 需要释放
                 IntPtr hIcon = bmp.GetHicon();
-                return Icon.FromHandle(hIcon);
+                try
+                {
+                    using Icon icon = Icon.FromHandle(hIcon);
+                    return (Icon)icon.Clone();
+                }
+                finally
+                {
+                    DestroyIcon(hIcon);
+                }
+            }
+        }
+
+        public static void WriteClockIco(string filePath, int size = 256)
+        {
+            byte[] icoBytes = CreateClockIcoBytes(size);
+            File.WriteAllBytes(filePath, icoBytes);
+        }
+
+        private static byte[] CreateClockIcoBytes(int size)
+        {
+            if (size <= 0)
+                size = 256;
+            if (size > 256)
+                size = 256;
+            if (size < 16)
+                size = 16;
+
+            byte[] pngBytes;
+            using (Bitmap bmp = new Bitmap(size, size))
+            using (Graphics g = Graphics.FromImage(bmp))
+            {
+                g.SmoothingMode = SmoothingMode.AntiAlias;
+                g.Clear(Color.Transparent);
+                DrawClock(g, size);
+
+                using var ms = new MemoryStream();
+                bmp.Save(ms, ImageFormat.Png);
+                pngBytes = ms.ToArray();
+            }
+
+            using var icoStream = new MemoryStream(6 + 16 + pngBytes.Length);
+            using (var bw = new BinaryWriter(icoStream, System.Text.Encoding.UTF8, leaveOpen: true))
+            {
+                bw.Write((ushort)0);
+                bw.Write((ushort)1);
+                bw.Write((ushort)1);
+
+                bw.Write((byte)(size == 256 ? 0 : size));
+                bw.Write((byte)(size == 256 ? 0 : size));
+                bw.Write((byte)0);
+                bw.Write((byte)0);
+                bw.Write((ushort)1);
+                bw.Write((ushort)32);
+                bw.Write((uint)pngBytes.Length);
+                bw.Write((uint)(6 + 16));
+            }
+
+            icoStream.Write(pngBytes, 0, pngBytes.Length);
+            return icoStream.ToArray();
+        }
+
+        private static void DrawClock(Graphics g, int size)
+        {
+            int margin = Math.Max(2, size / 16);
+            int clockSize = size - margin * 2;
+            Rectangle rect = new Rectangle(margin, margin, clockSize, clockSize);
+
+            // 定义轮廓颜色和宽度
+            Color outlineColor = Color.FromArgb(64, 64, 64);
+            float mainWidth = Math.Max(2, size / 16f);
+            float outlineWidth = mainWidth + Math.Max(1, size / 32f);
+            float handWidth = Math.Max(2, size / 22f);
+            float handOutlineWidth = handWidth + Math.Max(1, size / 32f);
+
+            // 1. 绘制耳朵 (先画轮廓)
+            using (Pen outlinePen = new Pen(outlineColor, Math.Max(1, size / 32f)))
+            using (Brush earBrush = new SolidBrush(Color.White))
+            {
+                // 左耳
+                g.DrawPie(outlinePen, 0, 0, size / 2, size / 2, 200, 50);
+                g.FillPie(earBrush, 0, 0, size / 2, size / 2, 200, 50);
+
+                // 右耳
+                g.DrawPie(outlinePen, size / 2, 0, size / 2, size / 2, 290, 50);
+                g.FillPie(earBrush, size / 2, 0, size / 2, size / 2, 290, 50);
+            }
+
+            // 2. 绘制表盘外圈 (先画轮廓)
+            using (Pen outlinePen = new Pen(outlineColor, outlineWidth))
+            using (Pen pen = new Pen(Color.White, mainWidth))
+            using (Brush bgBrush = new SolidBrush(Color.Black))
+            {
+                // 填充表盘背景，确保浅色模式下也能看清
+                g.FillEllipse(bgBrush, rect);
+                g.DrawEllipse(outlinePen, rect);
+                g.DrawEllipse(pen, rect);
+            }
+
+            // 3. 绘制指针 (先画轮廓)
+            Point center = new Point(size / 2, size / 2);
+            Point handEnd1 = new Point(center.X + Math.Max(2, size * 10 / 64), center.Y - Math.Max(2, size * 10 / 64));
+            Point handEnd2 = new Point(center.X, center.Y - Math.Max(3, size * 18 / 64));
+
+            using (Pen outlinePen = new Pen(outlineColor, handOutlineWidth))
+            using (Pen handPen = new Pen(Color.LightGreen, handWidth))
+            {
+                outlinePen.EndCap = LineCap.Round;
+                outlinePen.StartCap = LineCap.Round;
+                handPen.EndCap = LineCap.Round;
+                handPen.StartCap = LineCap.Round;
+
+                // 指针1
+                g.DrawLine(outlinePen, center, handEnd1);
+                g.DrawLine(handPen, center, handEnd1);
+
+                // 指针2
+                g.DrawLine(outlinePen, center, handEnd2);
+                g.DrawLine(handPen, center, handEnd2);
             }
         }
     }

Logger.cs

@@ -0,0 +1,36 @@
+using System;
+using System.IO;
+using System.Text;
+
+namespace TimerApp
+{
+    public static class Logger
+    {
+        private static readonly string LogFile = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "error.log");
+        private static readonly object LockObj = new object();
+
+        public static void LogError(string message, Exception? ex = null)
+        {
+            try
+            {
+                lock (LockObj)
+                {
+                    var sb = new StringBuilder();
+                    sb.AppendLine($"[{DateTime.Now:yyyy-MM-dd HH:mm:ss}] ERROR: {message}");
+                    if (ex != null)
+                    {
+                        sb.AppendLine($"Exception: {ex.Message}");
+                        sb.AppendLine($"StackTrace: {ex.StackTrace}");
+                    }
+                    sb.AppendLine(new string('-', 50));
+
+                    File.AppendAllText(LogFile, sb.ToString());
+                }
+            }
+            catch
+            {
+                // Failed to log, nothing we can do
+            }
+        }
+    }
+}

MainForm.Designer.cs

@@ -13,9 +13,11 @@ namespace TimerApp
         /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
         protected override void Dispose(bool disposing)
         {
-            if (disposing && (components != null))
+            if (disposing)
             {
-                components.Dispose();
+                _monitor?.Dispose();
+                _restForm?.Dispose();
+                components?.Dispose();
             }
             base.Dispose(disposing);
         }
@@ -41,6 +43,7 @@ namespace TimerApp
 
             this.btnStartStop = new System.Windows.Forms.Button();
             this.btnReset = new System.Windows.Forms.Button();
+            this.btnPause = new System.Windows.Forms.Button();
             this.lblStatus = new System.Windows.Forms.Label();
             this.lblTimeLeft = new System.Windows.Forms.Label();
             this.notifyIcon1 = new System.Windows.Forms.NotifyIcon(this.components);
@@ -169,6 +172,7 @@ namespace TimerApp
             // pnlSettings
             //
             this.pnlSettings.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(30)))), ((int)(((byte)(30)))), ((int)(((byte)(30)))));
+            this.pnlSettings.Controls.Add(this.btnPause);
             this.pnlSettings.Controls.Add(this.btnReset);
             this.pnlSettings.Controls.Add(this.btnStartStop);
             this.pnlSettings.Controls.Add(this.btnRestPlus);
@@ -305,11 +309,11 @@ namespace TimerApp
             this.btnStartStop.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
             this.btnStartStop.Font = new System.Drawing.Font("Microsoft YaHei UI", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point);
             this.btnStartStop.ForeColor = System.Drawing.Color.White;
-            this.btnStartStop.Location = new System.Drawing.Point(170, 110);
+            this.btnStartStop.Location = new System.Drawing.Point(210, 110);
             this.btnStartStop.Name = "btnStartStop";
-            this.btnStartStop.Size = new System.Drawing.Size(110, 35);
+            this.btnStartStop.Size = new System.Drawing.Size(70, 35);
             this.btnStartStop.TabIndex = 4;
-            this.btnStartStop.Text = "应用设置";
+            this.btnStartStop.Text = "应用";
             this.btnStartStop.UseVisualStyleBackColor = false;
             this.btnStartStop.Click += new System.EventHandler(this.btnStartStop_Click);
 
@@ -323,12 +327,28 @@ namespace TimerApp
             this.btnReset.ForeColor = System.Drawing.Color.White;
             this.btnReset.Location = new System.Drawing.Point(40, 110);
             this.btnReset.Name = "btnReset";
-            this.btnReset.Size = new System.Drawing.Size(110, 35);
+            this.btnReset.Size = new System.Drawing.Size(70, 35);
             this.btnReset.TabIndex = 8;
-            this.btnReset.Text = "重置计时";
+            this.btnReset.Text = "重置";
             this.btnReset.UseVisualStyleBackColor = false;
             this.btnReset.Click += new System.EventHandler(this.btnReset_Click);
 
+            //
+            // btnPause
+            //
+            this.btnPause.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(63)))), ((int)(((byte)(63)))), ((int)(((byte)(70)))));
+            this.btnPause.FlatAppearance.BorderSize = 0;
+            this.btnPause.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
+            this.btnPause.Font = new System.Drawing.Font("Microsoft YaHei UI", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point);
+            this.btnPause.ForeColor = System.Drawing.Color.White;
+            this.btnPause.Location = new System.Drawing.Point(125, 110);
+            this.btnPause.Name = "btnPause";
+            this.btnPause.Size = new System.Drawing.Size(70, 35);
+            this.btnPause.TabIndex = 9;
+            this.btnPause.Text = "暂停";
+            this.btnPause.UseVisualStyleBackColor = false;
+            this.btnPause.Click += new System.EventHandler(this.btnPause_Click);
+
             //
             // btnHide
             //
@@ -419,6 +439,7 @@ namespace TimerApp
         private System.Windows.Forms.Button btnRestPlus;
         private System.Windows.Forms.Button btnStartStop;
         private System.Windows.Forms.Button btnReset;
+        private System.Windows.Forms.Button btnPause;
         private System.Windows.Forms.Label lblStatus;
         private System.Windows.Forms.Label lblTimeLeft;
         private System.Windows.Forms.NotifyIcon notifyIcon1;

MainForm.cs

@@ -2,14 +2,15 @@ using System;
 using System.Drawing;
 using System.Runtime.InteropServices;
 using System.Windows.Forms;
+using Microsoft.Win32;
 
 namespace TimerApp
 {
     public partial class MainForm : Form
     {
-        private ActivityMonitor _monitor;
+        private ActivityMonitor _monitor = null!;
         private AppSettings _settings;
-        private RestForm _restForm;
+        private RestForm? _restForm;
 
         // Colors
         private Color _darkBg = Color.FromArgb(30, 30, 30);
@@ -24,10 +25,6 @@ namespace TimerApp
         public static extern bool ReleaseCapture();
         [DllImport("user32.dll")]
         public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);
-        [DllImport("user32.dll")]
-        static extern bool CreateCaret(IntPtr hWnd, IntPtr hBitmap, int nWidth, int nHeight);
-        [DllImport("user32.dll")]
-        static extern bool ShowCaret(IntPtr hWnd);
 
         private const int WM_NCLBUTTONDOWN = 0xA1;
         private const int HT_CAPTION = 0x2;
@@ -61,6 +58,7 @@ namespace TimerApp
             btnRestPlus.BackColor = panelColor;
             btnStartStop.BackColor = dark ? Color.FromArgb(63, 63, 70) : Color.White;
             btnReset.BackColor = dark ? Color.FromArgb(63, 63, 70) : Color.White;
+            btnPause.BackColor = dark ? Color.FromArgb(63, 63, 70) : Color.White;
 
             // 优化绘制，减少闪烁
             this.SetStyle(ControlStyles.AllPaintingInWmPaint |
@@ -105,8 +103,8 @@ namespace TimerApp
             // Manual input validation
             txtWork.KeyPress += ValidateDigitInput;
             txtRest.KeyPress += ValidateDigitInput;
-            txtWork.Leave += (s, ev) => ValidateRange((TextBox)s, 1, 120);
+            txtWork.Leave += (s, ev) => ValidateRange((TextBox)s!, 1, 120);
-            txtRest.Leave += (s, ev) => ValidateRange((TextBox)s, 1, 30);
+            txtRest.Leave += (s, ev) => ValidateRange((TextBox)s!, 1, 30);
 
             // Focus handling (remove custom caret)
             txtWork.KeyDown += TextBox_KeyDown;
@@ -132,13 +130,20 @@ namespace TimerApp
             try
             {
                 // Generate and set custom icon
-                Icon icon = IconGenerator.GenerateClockIcon();
+                Icon icon = IconGenerator.GenerateClockIcon(64);
                 this.Icon = icon;
                 notifyIcon1.Icon = icon;
+
+                contextMenuStrip1.ShowImageMargin = true;
+                toolStripMenuItemShow.Image = null;
+                toolStripMenuItemExit.Image = null;
             }
             catch
             {
                  notifyIcon1.Icon = SystemIcons.Application;
+                 contextMenuStrip1.ShowImageMargin = true;
+                 toolStripMenuItemShow.Image = null;
+                 toolStripMenuItemExit.Image = null;
             }
 
             UpdateStatusUI();
@@ -155,7 +160,7 @@ namespace TimerApp
             }
         }
 
-        private void ValidateDigitInput(object sender, KeyPressEventArgs e)
+        private void ValidateDigitInput(object? sender, KeyPressEventArgs e)
         {
             // Allow control keys (backspace, etc.) and digits
             if (!char.IsControl(e.KeyChar) && !char.IsDigit(e.KeyChar))
@@ -208,7 +213,7 @@ namespace TimerApp
 
         // CustomCaret removed to use system caret with centered text
 
-        private void TextBox_KeyDown(object sender, KeyEventArgs e)
+        private void TextBox_KeyDown(object? sender, KeyEventArgs e)
         {
             if (e.KeyCode == Keys.Enter)
             {
@@ -256,6 +261,7 @@ namespace TimerApp
             // Update buttons
             UpdateButtonStyle(btnStartStop, dark);
             UpdateButtonStyle(btnReset, dark);
+            UpdateButtonStyle(btnPause, dark);
             UpdateButtonStyle(btnHide, dark);
 
             // Numeric buttons and text
@@ -270,6 +276,22 @@ namespace TimerApp
             btnClose.ForeColor = text;
             btnMin.ForeColor = text;
 
+            // Set hover background colors for title buttons
+            if (dark)
+            {
+                // 深色模式下使用深色悬停背景
+                btnClose.FlatAppearance.MouseOverBackColor = Color.FromArgb(232, 17, 35); // 深色模式下的红色（稍微暗一点）
+                btnMin.FlatAppearance.MouseOverBackColor = Color.FromArgb(63, 63, 70);
+                btnTheme.FlatAppearance.MouseOverBackColor = Color.FromArgb(63, 63, 70);
+            }
+            else
+            {
+                // 浅色模式下使用浅色悬停背景
+                btnClose.FlatAppearance.MouseOverBackColor = Color.Red;
+                btnMin.FlatAppearance.MouseOverBackColor = Color.FromArgb(220, 220, 220); // 浅灰色，接近标题栏背景
+                btnTheme.FlatAppearance.MouseOverBackColor = Color.FromArgb(220, 220, 220); // 浅灰色，接近标题栏背景
+            }
+
             // Theme button with Segoe MDL2 Assets
             btnTheme.ForeColor = text;
             btnTheme.Font = new Font("Segoe MDL2 Assets", 10F, FontStyle.Regular, GraphicsUnit.Point);
@@ -356,6 +378,20 @@ namespace TimerApp
             _monitor.Restart();
         }
 
+        private void btnPause_Click(object sender, EventArgs e)
+        {
+            if (_monitor.IsPaused)
+            {
+                _monitor.Resume();
+                btnPause.Text = "暂停";
+            }
+            else
+            {
+                _monitor.Pause();
+                btnPause.Text = "恢复";
+            }
+        }
+
         private void ApplySettings()
         {
             int workMin = 20;
@@ -368,11 +404,11 @@ namespace TimerApp
             _monitor.IdleThreshold = TimeSpan.FromSeconds(_settings.IdleThresholdSeconds);
         }
 
-        private void Monitor_StateChanged(object sender, EventArgs e)
+        private void Monitor_StateChanged(object? sender, EventArgs e)
         {
             if (InvokeRequired)
             {
-                Invoke(new Action<object, EventArgs>(Monitor_StateChanged), sender, e);
+                BeginInvoke(new Action<object?, EventArgs>(Monitor_StateChanged), sender, e);
                 return;
             }
             UpdateStatusUI();
@@ -384,6 +420,18 @@ namespace TimerApp
 
             bool dark = _settings.IsDarkMode;
 
+            // 更新暂停按钮状态
+            if (_monitor.CurrentState == MonitorState.Idle)
+            {
+                btnPause.Enabled = false;
+                btnPause.Text = "暂停";
+            }
+            else
+            {
+                btnPause.Enabled = true;
+                btnPause.Text = _monitor.IsPaused ? "恢复" : "暂停";
+            }
+
             switch (_monitor.CurrentState)
             {
                 case MonitorState.Idle:
@@ -393,43 +441,49 @@ namespace TimerApp
                     lblTimeLeft.ForeColor = Color.Gray;
                     break;
                 case MonitorState.Working:
-                    lblStatus.Text = "状态: 工作中";
+                    lblStatus.Text = _monitor.IsPaused ? "状态: 工作中 (已暂停)" : "状态: 工作中";
                     lblStatus.ForeColor = dark ? Color.LightGreen : Color.Green;
                     lblTimeLeft.ForeColor = dark ? Color.White : Color.Black;
                     break;
                 case MonitorState.Resting:
-                    lblStatus.Text = "状态: 休息中";
+                    lblStatus.Text = _monitor.IsPaused ? "状态: 休息中 (已暂停)" : "状态: 休息中";
                     lblStatus.ForeColor = dark ? Color.LightSkyBlue : Color.Blue;
                     lblTimeLeft.ForeColor = dark ? Color.LightSkyBlue : Color.Blue;
                     break;
             }
         }
 
-        private void Monitor_WorkProgressChanged(object sender, TimeSpan remaining)
+        private void Monitor_WorkProgressChanged(object? sender, TimeSpan remaining)
         {
             if (InvokeRequired)
             {
-                Invoke(new Action<object, TimeSpan>(Monitor_WorkProgressChanged), sender, remaining);
+                BeginInvoke(new Action<object?, TimeSpan>(Monitor_WorkProgressChanged), sender, remaining);
                 return;
             }
             lblTimeLeft.Text = $"{remaining.Minutes:D2}:{remaining.Seconds:D2}";
 
             // Update tray tooltip
+            string newText;
             if (remaining.TotalMinutes < 1)
             {
-                notifyIcon1.Text = $"即将休息: {remaining.Seconds}秒";
+                newText = $"即将休息: {remaining.Seconds}秒";
             }
             else
             {
-                notifyIcon1.Text = $"工作中: 剩余 {remaining.Minutes} 分钟";
+                newText = $"工作中: 剩余 {remaining.Minutes} 分钟";
+            }
+
+            if (notifyIcon1.Text != newText)
+            {
+                notifyIcon1.Text = newText;
             }
         }
 
-        private void Monitor_RestStarted(object sender, EventArgs e)
+        private void Monitor_RestStarted(object? sender, EventArgs e)
         {
             if (InvokeRequired)
             {
-                Invoke(new Action<object, EventArgs>(Monitor_RestStarted), sender, e);
+                BeginInvoke(new Action<object?, EventArgs>(Monitor_RestStarted), sender, e);
                 return;
             }
 
@@ -440,28 +494,36 @@ namespace TimerApp
                 _restForm.SkipRequested += RestForm_SkipRequested;
             }
 
+            // 初始化显示时间，避免显示默认值
+            _restForm.UpdateTime(_monitor.RestDuration);
             _restForm.Show();
         }
 
-        private void RestForm_SkipRequested(object sender, EventArgs e)
+        private void RestForm_SkipRequested(object? sender, EventArgs e)
         {
             _monitor.Stop();
             _monitor.Start();
         }
 
-        private void Monitor_RestProgressChanged(object sender, TimeSpan remaining)
+        private void Monitor_RestProgressChanged(object? sender, TimeSpan remaining)
         {
+            if (InvokeRequired)
+            {
+                BeginInvoke(new Action<object?, TimeSpan>(Monitor_RestProgressChanged), sender, remaining);
+                return;
+            }
+
             if (_restForm != null && !_restForm.IsDisposed && _restForm.Visible)
             {
                 _restForm.UpdateTime(remaining);
             }
         }
 
-        private void Monitor_RestEnded(object sender, EventArgs e)
+        private void Monitor_RestEnded(object? sender, EventArgs e)
         {
             if (InvokeRequired)
             {
-                Invoke(new Action<object, EventArgs>(Monitor_RestEnded), sender, e);
+                BeginInvoke(new Action<object?, EventArgs>(Monitor_RestEnded), sender, e);
                 return;
             }
 
@@ -473,15 +535,14 @@ namespace TimerApp
             notifyIcon1.ShowBalloonTip(3000, "休息结束", "继续加油工作吧！", ToolTipIcon.Info);
         }
 
-        private bool _hasShownMinimizeTip = false;
-
         private void btnHide_Click(object sender, EventArgs e)
         {
             this.Hide();
-            if (!_hasShownMinimizeTip)
+            if (!_settings.HasShownMinimizeTip)
             {
                 notifyIcon1.ShowBalloonTip(2000, "已隐藏", "程序仍在后台运行，双击托盘图标恢复。", ToolTipIcon.Info);
-                _hasShownMinimizeTip = true;
+                _settings.HasShownMinimizeTip = true;
+                _settings.Save();
             }
         }
 
@@ -491,36 +552,68 @@ namespace TimerApp
             {
                 e.Cancel = true;
                 this.Hide();
-                if (!_hasShownMinimizeTip)
+                if (!_settings.HasShownMinimizeTip)
                 {
                     notifyIcon1.ShowBalloonTip(2000, "已隐藏", "程序仍在后台运行，双击托盘图标恢复。", ToolTipIcon.Info);
-                    _hasShownMinimizeTip = true;
+                    _settings.HasShownMinimizeTip = true;
+                    _settings.Save();
                 }
             }
+            else
+            {
+                notifyIcon1.Visible = false;
+                notifyIcon1.Dispose();
+            }
         }
 
-        private void notifyIcon1_MouseDoubleClick(object sender, MouseEventArgs e)
+        private void notifyIcon1_MouseDoubleClick(object? sender, MouseEventArgs e)
         {
             ShowForm();
         }
 
-        private void toolStripMenuItemShow_Click(object sender, EventArgs e)
+        private void toolStripMenuItemShow_Click(object? sender, EventArgs e)
         {
             ShowForm();
         }
 
         private void ShowForm()
         {
+            if (this.IsDisposed) return;
+            
+            this.Show();
+            if (this.WindowState == FormWindowState.Minimized)
+            {
+                this.WindowState = FormWindowState.Normal;
+            }
+            this.Activate();
+            this.BringToFront();
+        }
+
+        public void ActivateFromExternal()
+        {
+            if (InvokeRequired)
+            {
+                BeginInvoke(new Action(ActivateFromExternal));
+                return;
+            }
+
             this.Show();
             this.WindowState = FormWindowState.Normal;
+            this.ShowInTaskbar = true;
+            this.BringToFront();
             this.Activate();
+            this.TopMost = true;
+            this.TopMost = false;
         }
 
         private void toolStripMenuItemExit_Click(object sender, EventArgs e)
         {
             _monitor.Stop();
+            _monitor.Dispose();
             notifyIcon1.Visible = false;
+            notifyIcon1.Dispose();
             Application.Exit();
+            Environment.Exit(0);
         }
 
         private void pnlTitle_MouseDown(object sender, MouseEventArgs e)

NativeMethods.cs

@@ -1,5 +1,7 @@
 using System;
 using System.Runtime.InteropServices;
+using System.Threading;
+using System.Threading.Tasks;
 
 namespace TimerApp
 {
@@ -19,34 +21,37 @@ namespace TimerApp
         [DllImport("user32.dll")]
         static extern bool GetLastInputInfo(ref LASTINPUTINFO plii);
 
+        [DllImport("kernel32.dll")]
+        static extern uint GetTickCount();
+
         /// <summary>
         /// 获取系统空闲时间（毫秒）
         /// </summary>
         /// <returns></returns>
         public static long GetIdleTime()
         {
-            LASTINPUTINFO lastInputInfo = new LASTINPUTINFO();
+            LASTINPUTINFO lastInputInfo = new LASTINPUTINFO
-            lastInputInfo.cbSize = (uint)Marshal.SizeOf(lastInputInfo);
+            {
-            lastInputInfo.dwTime = 0;
+                cbSize = (uint)Marshal.SizeOf<LASTINPUTINFO>(),
+                dwTime = 0
+            };
 
             if (GetLastInputInfo(ref lastInputInfo))
             {
-                // Environment.TickCount 可能会在大约 24.9 天后翻转为负数，
+                uint tickCount = GetTickCount();
-                // 但 GetLastInputInfo 返回的也是 uint (DWORD)，所以我们统一转为 long 处理差值
+                uint idleMs = unchecked(tickCount - lastInputInfo.dwTime);
-                // 或者直接使用 unchecked 减法处理溢出
+                return idleMs;
-                // 更稳健的做法是使用 GetTickCount64 (Vista+)，但 Environment.TickCount 在 .NET Core 3.1+ 已经是 64位了(Environment.TickCount64)
-                // 这里为了兼容性，我们简单处理。注意 GetLastInputInfo 返回的是 uint 毫秒数。
-                
-                long envTicks = Environment.TickCount;
-                // 处理 TickCount 翻转问题 (Environment.TickCount 是 int，GetLastInputInfo 是 uint)
-                // 简单的做法:
-                return (long)GetTickCount() - (long)lastInputInfo.dwTime;
             }
 
             return 0;
         }
 
-        [DllImport("kernel32.dll")]
+        static NativeMethods()
-        static extern uint GetTickCount();
+        {
+        }
+
+        public static void Shutdown()
+        {
+        }
     }
 }

PortableMode.cs

@@ -0,0 +1,46 @@
+using System;
+
+namespace TimerApp
+{
+    internal static class PortableMode
+    {
+        private const string PortableEnvVarName = "TIMERAPP_PORTABLE";
+
+        public static bool IsPortable
+        {
+            get
+            {
+                try
+                {
+                    string? env = Environment.GetEnvironmentVariable(PortableEnvVarName);
+                    if (!string.IsNullOrWhiteSpace(env))
+                    {
+                        if (string.Equals(env, "0", StringComparison.OrdinalIgnoreCase) ||
+                            string.Equals(env, "false", StringComparison.OrdinalIgnoreCase) ||
+                            string.Equals(env, "no", StringComparison.OrdinalIgnoreCase) ||
+                            string.Equals(env, "off", StringComparison.OrdinalIgnoreCase) ||
+                            string.Equals(env, "disable", StringComparison.OrdinalIgnoreCase))
+                        {
+                            return false;
+                        }
+
+                        if (string.Equals(env, "1", StringComparison.OrdinalIgnoreCase) ||
+                            string.Equals(env, "true", StringComparison.OrdinalIgnoreCase) ||
+                            string.Equals(env, "yes", StringComparison.OrdinalIgnoreCase) ||
+                            string.Equals(env, "on", StringComparison.OrdinalIgnoreCase) ||
+                            string.Equals(env, "enable", StringComparison.OrdinalIgnoreCase))
+                        {
+                            return true;
+                        }
+                    }
+
+                    return true;
+                }
+                catch
+                {
+                    return true;
+                }
+            }
+        }
+    }
+}

Program.cs

@@ -5,12 +5,51 @@ static class Program
     /// <summary>
     ///  The main entry point for the application.
     /// </summary>
-    [STAThread]
+        [STAThread]
-    static void Main()
+        static void Main()
-    {
+        {
-        // To customize application configuration such as set high DPI settings or default font,
+            // 设置全局异常处理
-        // see https://aka.ms/applicationconfiguration.
+            Application.SetUnhandledExceptionMode(UnhandledExceptionMode.CatchException);
-        ApplicationConfiguration.Initialize();
+            Application.ThreadException += Application_ThreadException;
-        Application.Run(new MainForm());
+            AppDomain.CurrentDomain.UnhandledException += CurrentDomain_UnhandledException;
-    }
+
+            if (!SingleInstanceManager.TryAcquire(out var instance) || instance is null)
+            {
+                SingleInstanceManager.SignalExistingInstance();
+                return;
+            }
+
+            try
+            {
+                using (instance)
+                {
+                    TaskbarIntegration.InitializeProcess();
+                    ApplicationConfiguration.Initialize();
+                    TaskbarIntegration.InitializeShortcuts();
+
+                    var mainForm = new MainForm();
+                    instance.StartServer(mainForm.ActivateFromExternal);
+                    Application.Run(mainForm);
+                }
+            }
+            catch (Exception ex)
+            {
+                Logger.LogError("Fatal error in Main", ex);
+                MessageBox.Show($"程序发生严重错误即将退出：\n{ex.Message}", "TimerApp Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+
+        private static void Application_ThreadException(object sender, System.Threading.ThreadExceptionEventArgs e)
+        {
+            Logger.LogError("Unhandled UI Exception", e.Exception);
+            // 这里可以选择不退出，或者提示用户
+            // MessageBox.Show("发生未知错误，程序将尝试继续运行。", "错误", MessageBoxButtons.OK, MessageBoxIcon.Warning);
+        }
+
+        private static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
+        {
+            var ex = e.ExceptionObject as Exception;
+            Logger.LogError("Unhandled Domain Exception" + (e.IsTerminating ? " (Terminating)" : ""), ex);
+        }
+
 }

README.md

@@ -0,0 +1,109 @@
+# TimerApp
+
+一个常驻后台的“工作/休息”计时提醒工具，核心目标是把休息从“靠自觉”变成“靠节奏”：工作一段时间后进入休息提示，休息结束再回到下一轮工作。
+
+## 产品定位
+
+- 适用人群：需要规律休息/护眼提醒的人，或希望把“休息”纳入工作节奏的人
+- 目标：减少连续久坐、避免长时间盯屏，通过强提示把休息真正落地
+- 使用方式：后台常驻 + 托盘入口，默认不打扰，只有到点进入休息时才强提醒
+
+## 核心概念
+
+- 一个周期：工作一段时间 → 休息一段时间 → 开始下一轮
+- 三种状态：
+  - 空闲：系统判断你没有在“有效工作”，本轮工作时长不推进
+  - 工作：系统判断你在“有效工作”，本轮工作时长持续推进
+  - 休息：工作时长达到阈值后进入的强提醒阶段，休息倒计时结束后回到下一轮
+
+## 核心逻辑（状态机）
+
+- 初始进入空闲：避免一启动就强行把你当作“正在工作”
+- 空闲 → 工作：当检测到你处于活动状态，开始累积本轮工作时长
+- 工作 → 空闲：当检测到你长时间未操作，暂停本轮工作推进
+- 工作 → 休息：当本轮工作时长累计达到设定值，进入休息提醒并开始倒计时
+- 休息 → 空闲：休息倒计时结束，提示“休息结束”，回到空闲等待下一次有效活动
+
+## 计时规则（核心策略）
+
+- “工作时长”不是自然时间，而是“有效工作时间”
+  - 你在活动状态时才累积
+  - 你离开电脑/长时间不操作时不会累积
+- 空闲时间很长时会重置本轮进度
+  - 设计目的：避免“离开一小时回来只剩 1 分钟就休息”的反直觉体验
+  - 直观理解：离开足够久就视为已经中断了一轮工作，回来从新的一轮开始更合理
+- 休息倒计时以“秒级稳定推进”为目标
+  - 设计目的：让休息提示的倒计时更平滑、更可预期
+
+## 休息提醒（强提示的边界）
+
+- 休息阶段会出现遮罩式提醒，核心是“让你意识到现在该休息了”
+- 休息阶段提供“跳过”
+  - 设计目的：保证强提示不与真实工作紧急程度冲突，必要时可快速回到工作
+- 休息结束会给出结束提示，帮助你在不打开主界面的情况下也能知道已进入下一轮
+
+## 使用说明（产品层）
+
+- 设置工作/休息时长：决定每轮节奏的长度
+- 暂停/恢复：临时不想被计时推进或进入休息时使用
+- 重置：放弃当前进度，从新一轮开始
+- 隐藏到托盘：把窗口收起但继续运行（避免误关）
+- 退出：真正结束应用与提醒（需要显式操作）
+
+## 常见场景
+
+- 你在电脑前持续工作：按设定节奏进入休息提醒
+- 你离开电脑一会儿再回来：这段时间不算作有效工作，避免“人在不在都算工作”
+- 你刚好在关键时刻被提醒：可以跳过本次休息，稍后再通过节奏回到下一轮
+
+## 运行逻辑（从用户视角）
+
+- 启动后读取上次的时长与偏好，进入后台常驻
+- 当检测到用户处于活动状态时，进入“工作”并开始累积工作时长
+- 当检测到用户长时间未操作时，进入“空闲”，并按规则暂停/重置工作进度，避免把不在工作的时间算进“工作时长”
+- 当工作时长达到阈值时，进入“休息”，弹出遮罩式提醒并倒计时
+- 休息倒计时结束后，关闭提醒并提示“休息结束”，回到下一轮
+
+## 配置与便携模式
+
+- **配置文件策略**：
+  - 优先读取 `LocalAppData\TimerApp\settings.json`
+  - 若不存在，尝试读取程序运行目录下的 `settings.json`（兼容便携模式）
+- **便携模式 (Portable Mode)**：
+  - **默认开启**：程序会在运行目录下读写 `settings.json`，且**不会**自动创建开始菜单/任务栏快捷方式。
+  - **关闭方式**：设置环境变量 `TIMERAPP_PORTABLE=0` (或 `false`/`off`/`disable`)。
+    - 关闭后，配置将强制存储在 `LocalAppData`。
+    - 启动时会自动尝试修复/创建开始菜单与任务栏快捷方式（包含 AppUserModelID 支持，解决任务栏图标重叠问题）。
+
+## 交互与体验取舍
+
+- 托盘常驻：关闭窗口不等于退出，避免误关导致节奏中断；需要显式“退出”才结束进程
+- 手动控制：支持调整工作/休息时长、暂停/恢复、重置一轮，用于临时打断或重新开始
+- 休息阶段可跳过：允许用户在必要场景下结束本次休息并立刻回到下一轮
+
+## 系统要求
+
+- Windows 10 / 11
+- .NET Desktop Runtime 9.0 (若使用 Framework-dependent 发布版本)
+
+## 编译与发布
+
+- 开发环境要求
+  - Windows（WinForms 桌面程序）
+  - .NET SDK 9（项目目标框架：net9.0-windows）
+- 本地编译
+  - Debug：
+    - `dotnet build`
+  - Release：
+    - `dotnet build -c Release`
+- 本地运行
+  - `dotnet run`
+- 便携版打包（生成 dist zip）
+  - 推荐使用 PowerShell 脚本一键发布：
+    - `.\scripts\publish-portable.ps1`
+    - **生成独立版 (Self-contained)**：目标机无需安装 .NET Runtime，但体积较大
+      - `.\scripts\publish-portable.ps1 -SelfContained $true`
+    - **指定架构**（如 x64）：
+      - `.\scripts\publish-portable.ps1 -Rid win-x64`
+    - **开启裁剪 (Trim)**（实验性）：
+      - `.\scripts\publish-portable.ps1 -Trim $true`

RestForm.cs

@@ -6,11 +6,23 @@ namespace TimerApp
 {
     public class RestForm : Form
     {
-        private Label lblMessage;
+        private Label lblMessage = null!;
-        private Label lblTimer;
+        private Label lblTimer = null!;
-        private Button btnSkip;
+        private Button btnSkip = null!;
 
-        public event EventHandler SkipRequested;
+        public event EventHandler? SkipRequested;
+
+        protected override CreateParams CreateParams
+        {
+            get
+            {
+                CreateParams cp = base.CreateParams;
+                // Turn on WS_EX_TOOLWINDOW style bit (0x80)
+                // 这可以防止窗口出现在 Alt-Tab 列表中，并减少任务栏闪烁风险
+                cp.ExStyle |= 0x80;
+                return cp;
+            }
+        }
 
         public RestForm()
         {
@@ -29,10 +41,11 @@ namespace TimerApp
             // Form 设置
             //
             this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
-            this.WindowState = FormWindowState.Maximized;
+            this.StartPosition = FormStartPosition.Manual;
+            this.Location = new System.Drawing.Point(-32000, -32000); // 初始位置在屏幕外
             this.TopMost = true;
             this.BackColor = System.Drawing.Color.Black;
-            this.Opacity = 0.90; // 90% 不透明度
+            this.Opacity = 0; // 初始隐藏，避免闪烁
             this.ShowInTaskbar = false;
             this.Name = "RestForm";
             this.Text = "Rest Now";
@@ -63,7 +76,7 @@ namespace TimerApp
             // 初始大小，会在CenterControls中动态调整
             this.lblTimer.Size = new System.Drawing.Size(400, 180);
             this.lblTimer.TabIndex = 1;
-            this.lblTimer.Text = "01:00";
+            this.lblTimer.Text = "--:--";
             this.lblTimer.TextAlign = ContentAlignment.MiddleCenter;
 
             //
@@ -99,12 +112,34 @@ namespace TimerApp
             this.PerformLayout();
         }
 
-        private void RestForm_Load(object sender, EventArgs e)
+        private void RestForm_Load(object? sender, EventArgs e)
         {
             CenterControls();
         }
 
-        private void RestForm_Resize(object sender, EventArgs e)
+        protected override void OnVisibleChanged(EventArgs e)
+        {
+            base.OnVisibleChanged(e);
+            if (this.Visible)
+            {
+                // 移回屏幕并最大化
+                this.Location = new Point(0, 0);
+                this.WindowState = FormWindowState.Maximized;
+                this.Refresh();
+                
+                // 延迟显示，确保布局调整完成
+                System.Windows.Forms.Timer t = new System.Windows.Forms.Timer();
+                t.Interval = 50;
+                t.Tick += (s, ev) => {
+                    t.Stop();
+                    t.Dispose();
+                    this.Opacity = 0.90;
+                };
+                t.Start();
+            }
+        }
+
+        private void RestForm_Resize(object? sender, EventArgs e)
         {
             CenterControls();
         }
@@ -143,7 +178,7 @@ namespace TimerApp
         {
             if (lblTimer.InvokeRequired)
             {
-                lblTimer.Invoke(new Action<TimeSpan>(UpdateTime), remaining);
+                lblTimer.BeginInvoke(new Action<TimeSpan>(UpdateTime), remaining);
             }
             else
             {
@@ -153,7 +188,7 @@ namespace TimerApp
             }
         }
 
-        private void btnSkip_Click(object sender, EventArgs e)
+        private void btnSkip_Click(object? sender, EventArgs e)
         {
             SkipRequested?.Invoke(this, EventArgs.Empty);
             this.Close();

SingleInstanceManager.cs

@@ -0,0 +1,126 @@
+using System;
+using System.IO;
+using System.IO.Pipes;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace TimerApp
+{
+    internal sealed class SingleInstanceManager : IDisposable
+    {
+        private const string MutexName = "Local\\TimerApp.SingleInstance";
+        private const string PipeName = "TimerApp.SingleInstancePipe";
+
+        private readonly Mutex? _mutex;
+        private readonly bool _ownsMutex;
+        private readonly bool _enableIpc;
+        private readonly CancellationTokenSource _cts = new();
+
+        private SingleInstanceManager(Mutex? mutex, bool ownsMutex, bool enableIpc)
+        {
+            _mutex = mutex;
+            _ownsMutex = ownsMutex;
+            _enableIpc = enableIpc;
+        }
+
+        public static bool TryAcquire(out SingleInstanceManager? manager)
+        {
+            manager = null;
+
+            try
+            {
+                var mutex = new Mutex(true, MutexName, out bool createdNew);
+                if (!createdNew)
+                {
+                    mutex.Dispose();
+                    return false;
+                }
+
+                manager = new SingleInstanceManager(mutex, ownsMutex: true, enableIpc: true);
+                return true;
+            }
+            catch
+            {
+                manager = new SingleInstanceManager(mutex: null, ownsMutex: false, enableIpc: false);
+                return true;
+            }
+        }
+
+        public static void SignalExistingInstance()
+        {
+            try
+            {
+                using var client = new NamedPipeClientStream(".", PipeName, PipeDirection.Out);
+                client.Connect(200);
+                using var writer = new StreamWriter(client) { AutoFlush = true };
+                writer.WriteLine("show");
+            }
+            catch
+            {
+            }
+        }
+
+        public void StartServer(Action onShowRequested)
+        {
+            if (!_enableIpc) return;
+            Task.Run(() => ServerLoop(onShowRequested, _cts.Token));
+        }
+
+        private static async Task ServerLoop(Action onShowRequested, CancellationToken cancellationToken)
+        {
+            while (!cancellationToken.IsCancellationRequested)
+            {
+                try
+                {
+                    using var server = new NamedPipeServerStream(
+                        PipeName,
+                        PipeDirection.In,
+                        1,
+                        PipeTransmissionMode.Byte,
+                        PipeOptions.Asynchronous
+                    );
+
+                    await server.WaitForConnectionAsync(cancellationToken).ConfigureAwait(false);
+
+                    using var reader = new StreamReader(server);
+                    string? line = await reader.ReadLineAsync(cancellationToken).ConfigureAwait(false);
+                    if (string.Equals(line, "show", StringComparison.OrdinalIgnoreCase))
+                        onShowRequested();
+                }
+                catch (OperationCanceledException)
+                {
+                    return;
+                }
+                catch
+                {
+                    await Task.Delay(150, cancellationToken).ConfigureAwait(false);
+                }
+            }
+        }
+
+        public void Dispose()
+        {
+            try
+            {
+                _cts.Cancel();
+            }
+            catch
+            {
+            }
+
+            try
+            {
+                if (_ownsMutex)
+                {
+                    _mutex?.ReleaseMutex();
+                }
+            }
+            catch
+            {
+            }
+
+            _mutex?.Dispose();
+            _cts.Dispose();
+        }
+    }
+}

TaskbarIntegration.cs

@@ -0,0 +1,308 @@
+using System;
+using System.IO;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace TimerApp
+{
+    internal static class TaskbarIntegration
+    {
+        private const string AppId = "TimerApp";
+        private const string DisplayName = "TimerApp";
+
+        [DllImport("shell32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
+        private static extern int SetCurrentProcessExplicitAppUserModelID(string AppID);
+
+        [DllImport("shell32.dll")]
+        private static extern void SHChangeNotify(uint wEventId, uint uFlags, IntPtr dwItem1, IntPtr dwItem2);
+
+        private const uint SHCNE_ASSOCCHANGED = 0x08000000;
+        private const uint SHCNF_IDLIST = 0x0000;
+
+        public static void InitializeProcess()
+        {
+            TrySetAppUserModelId();
+        }
+
+        public static void InitializeShortcuts()
+        {
+            if (PortableMode.IsPortable)
+                return;
+
+            string? iconPath = TryEnsureIconFile();
+            if (iconPath is null)
+                return;
+
+            TryEnsureStartMenuShortcut(iconPath);
+            TryUpdatePinnedTaskbarShortcuts(iconPath);
+            SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, IntPtr.Zero, IntPtr.Zero);
+        }
+
+        private static void TrySetAppUserModelId()
+        {
+            try
+            {
+                SetCurrentProcessExplicitAppUserModelID(AppId);
+            }
+            catch
+            {
+            }
+        }
+
+        private static string? TryEnsureIconFile()
+        {
+            try
+            {
+                string dir = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "TimerApp");
+                Directory.CreateDirectory(dir);
+
+                string iconPath = Path.Combine(dir, "TimerApp.ico");
+                IconGenerator.WriteClockIco(iconPath, 256);
+
+                return iconPath;
+            }
+            catch
+            {
+                return null;
+            }
+        }
+
+        private static void TryEnsureStartMenuShortcut(string iconPath)
+        {
+            try
+            {
+                string exePath = Environment.ProcessPath ?? string.Empty;
+                if (string.IsNullOrWhiteSpace(exePath) || !File.Exists(exePath))
+                    return;
+
+                string programsDir = Path.Combine(
+                    Environment.GetFolderPath(Environment.SpecialFolder.StartMenu),
+                    "Programs"
+                );
+                Directory.CreateDirectory(programsDir);
+
+                string lnkPath = Path.Combine(programsDir, "TimerApp.lnk");
+                CreateOrUpdateShortcut(lnkPath, exePath, iconPath, AppId);
+            }
+            catch
+            {
+            }
+        }
+
+        private static void TryUpdatePinnedTaskbarShortcuts(string iconPath)
+        {
+            try
+            {
+                string exePath = Environment.ProcessPath ?? string.Empty;
+                if (string.IsNullOrWhiteSpace(exePath) || !File.Exists(exePath))
+                    return;
+
+                string pinnedDir = Path.Combine(
+                    Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
+                    "Microsoft",
+                    "Internet Explorer",
+                    "Quick Launch",
+                    "User Pinned",
+                    "TaskBar"
+                );
+
+                if (!Directory.Exists(pinnedDir))
+                    return;
+
+                foreach (string lnkPath in Directory.EnumerateFiles(pinnedDir, "*.lnk", SearchOption.TopDirectoryOnly))
+                {
+                    if (!TryGetShortcutTarget(lnkPath, out string targetPath))
+                        continue;
+
+                    if (!string.Equals(Path.GetFullPath(targetPath), Path.GetFullPath(exePath), StringComparison.OrdinalIgnoreCase))
+                        continue;
+
+                    CreateOrUpdateShortcut(lnkPath, exePath, iconPath, AppId);
+                }
+            }
+            catch
+            {
+            }
+        }
+
+        private static bool TryGetShortcutTarget(string lnkPath, out string targetPath)
+        {
+            targetPath = string.Empty;
+            IShellLinkW? link = null;
+            try
+            {
+                link = (IShellLinkW)new ShellLink();
+                ((IPersistFile)link).Load(lnkPath, 0);
+
+                var sb = new StringBuilder(260);
+                link.GetPath(sb, sb.Capacity, out _, 0);
+                string path = sb.ToString();
+                if (string.IsNullOrWhiteSpace(path))
+                    return false;
+
+                targetPath = path;
+                return true;
+            }
+            catch
+            {
+                return false;
+            }
+            finally
+            {
+                if (link is not null)
+                    Marshal.FinalReleaseComObject(link);
+            }
+        }
+
+        private static void CreateOrUpdateShortcut(string lnkPath, string exePath, string iconPath, string appId)
+        {
+            IShellLinkW? link = null;
+            IPropertyStore? store = null;
+            try
+            {
+                link = (IShellLinkW)new ShellLink();
+                link.SetPath(exePath);
+                link.SetIconLocation(iconPath, 0);
+                link.SetArguments(string.Empty);
+                link.SetWorkingDirectory(Path.GetDirectoryName(exePath) ?? string.Empty);
+
+                store = (IPropertyStore)link;
+                using var pvAppId = PropVariant.FromString(appId);
+                using var pvRelaunchCommand = PropVariant.FromString(exePath);
+                using var pvRelaunchName = PropVariant.FromString(DisplayName);
+                using var pvRelaunchIcon = PropVariant.FromString(iconPath);
+
+                store.SetValue(PropertyKey.PKEY_AppUserModel_ID, pvAppId);
+                store.SetValue(PropertyKey.PKEY_AppUserModel_RelaunchCommand, pvRelaunchCommand);
+                store.SetValue(PropertyKey.PKEY_AppUserModel_RelaunchDisplayNameResource, pvRelaunchName);
+                store.SetValue(PropertyKey.PKEY_AppUserModel_RelaunchIconResource, pvRelaunchIcon);
+                store.Commit();
+
+                ((IPersistFile)link).Save(lnkPath, true);
+            }
+            finally
+            {
+                if (store is not null)
+                    Marshal.FinalReleaseComObject(store);
+                if (link is not null)
+                    Marshal.FinalReleaseComObject(link);
+            }
+        }
+
+        [ComImport]
+        [Guid("00021401-0000-0000-C000-000000000046")]
+        private class ShellLink
+        {
+        }
+
+        [ComImport]
+        [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+        [Guid("000214F9-0000-0000-C000-000000000046")]
+        private interface IShellLinkW
+        {
+            void GetPath([Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszFile, int cch, out WIN32_FIND_DATAW pfd, uint fFlags);
+            void GetIDList(out IntPtr ppidl);
+            void SetIDList(IntPtr pidl);
+            void GetDescription([Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszName, int cch);
+            void SetDescription([MarshalAs(UnmanagedType.LPWStr)] string pszName);
+            void GetWorkingDirectory([Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszDir, int cch);
+            void SetWorkingDirectory([MarshalAs(UnmanagedType.LPWStr)] string pszDir);
+            void GetArguments([Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszArgs, int cch);
+            void SetArguments([MarshalAs(UnmanagedType.LPWStr)] string pszArgs);
+            void GetHotkey(out short pwHotkey);
+            void SetHotkey(short wHotkey);
+            void GetShowCmd(out int piShowCmd);
+            void SetShowCmd(int iShowCmd);
+            void GetIconLocation([Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszIconPath, int cch, out int piIcon);
+            void SetIconLocation([MarshalAs(UnmanagedType.LPWStr)] string pszIconPath, int iIcon);
+            void SetRelativePath([MarshalAs(UnmanagedType.LPWStr)] string pszPathRel, uint dwReserved);
+            void Resolve(IntPtr hwnd, uint fFlags);
+            void SetPath([MarshalAs(UnmanagedType.LPWStr)] string pszFile);
+        }
+
+        [ComImport]
+        [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+        [Guid("0000010B-0000-0000-C000-000000000046")]
+        private interface IPersistFile
+        {
+            void GetClassID(out Guid pClassID);
+            void IsDirty();
+            void Load([MarshalAs(UnmanagedType.LPWStr)] string pszFileName, uint dwMode);
+            void Save([MarshalAs(UnmanagedType.LPWStr)] string pszFileName, [MarshalAs(UnmanagedType.Bool)] bool fRemember);
+            void SaveCompleted([MarshalAs(UnmanagedType.LPWStr)] string pszFileName);
+            void GetCurFile([MarshalAs(UnmanagedType.LPWStr)] out string ppszFileName);
+        }
+
+        [ComImport]
+        [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+        [Guid("886D8EEB-8CF2-4446-8D02-CDBA1DBDCF99")]
+        private interface IPropertyStore
+        {
+            uint GetCount(out uint cProps);
+            uint GetAt(uint iProp, out PropertyKey pkey);
+            uint GetValue(ref PropertyKey key, out PropVariant pv);
+            uint SetValue(ref PropertyKey key, [In] PropVariant pv);
+            uint Commit();
+        }
+
+        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
+        private struct WIN32_FIND_DATAW
+        {
+            public uint dwFileAttributes;
+            public System.Runtime.InteropServices.ComTypes.FILETIME ftCreationTime;
+            public System.Runtime.InteropServices.ComTypes.FILETIME ftLastAccessTime;
+            public System.Runtime.InteropServices.ComTypes.FILETIME ftLastWriteTime;
+            public uint nFileSizeHigh;
+            public uint nFileSizeLow;
+            public uint dwReserved0;
+            public uint dwReserved1;
+            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
+            public string cFileName;
+            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 14)]
+            public string cAlternateFileName;
+        }
+
+        [StructLayout(LayoutKind.Sequential)]
+        private struct PropertyKey
+        {
+            public Guid fmtid;
+            public uint pid;
+
+            public PropertyKey(Guid fmtid, uint pid)
+            {
+                this.fmtid = fmtid;
+                this.pid = pid;
+            }
+
+            public static PropertyKey PKEY_AppUserModel_ID { get; } = new PropertyKey(new Guid("9F4C2855-9F79-4B39-A8D0-E1D42DE1D5F3"), 5);
+            public static PropertyKey PKEY_AppUserModel_RelaunchCommand { get; } = new PropertyKey(new Guid("9F4C2855-9F79-4B39-A8D0-E1D42DE1D5F3"), 2);
+            public static PropertyKey PKEY_AppUserModel_RelaunchIconResource { get; } = new PropertyKey(new Guid("9F4C2855-9F79-4B39-A8D0-E1D42DE1D5F3"), 3);
+            public static PropertyKey PKEY_AppUserModel_RelaunchDisplayNameResource { get; } = new PropertyKey(new Guid("9F4C2855-9F79-4B39-A8D0-E1D42DE1D5F3"), 4);
+        }
+
+        [StructLayout(LayoutKind.Explicit)]
+        private sealed class PropVariant : IDisposable
+        {
+            [FieldOffset(0)]
+            private readonly ushort vt;
+            [FieldOffset(8)]
+            private readonly IntPtr pointerValue;
+
+            private PropVariant(string value)
+            {
+                vt = 31;
+                pointerValue = Marshal.StringToCoTaskMemUni(value);
+            }
+
+            public static PropVariant FromString(string value) => new PropVariant(value);
+
+            public void Dispose()
+            {
+                PropVariantClear(this);
+            }
+
+            [DllImport("ole32.dll")]
+            private static extern int PropVariantClear([In, Out] PropVariant pvar);
+        }
+    }
+}

TimerApp.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
@@ -6,6 +6,7 @@
     <Nullable>enable</Nullable>
     <UseWindowsForms>true</UseWindowsForms>
     <ImplicitUsings>enable</ImplicitUsings>
+    <ApplicationIcon>Properties\app.ico</ApplicationIcon>
   </PropertyGroup>
 
 </Project>

scripts/publish-portable.cmd

@@ -0,0 +1,5 @@
+@echo off
+setlocal
+powershell -NoProfile -ExecutionPolicy Bypass -File "%~dp0publish-portable.ps1" %*
+exit /b %errorlevel%
+

scripts/publish-portable.ps1

@@ -0,0 +1,91 @@
+param(
+    [string]$Rid = "win-x64",
+    [bool]$SelfContained = $false,
+    [bool]$SingleFile = $true,
+    [bool]$EnableCompressionInSingleFile = $true,
+    [bool]$ReadyToRun = $false,
+    [bool]$Trim = $false,
+    [bool]$InvariantGlobalization = $false
+)
+
+$ErrorActionPreference = "Stop"
+Set-StrictMode -Version Latest
+
+$repoRoot = Resolve-Path (Join-Path $PSScriptRoot "..")
+$project = Join-Path $repoRoot "TimerApp.csproj"
+
+$artifactsDir = Join-Path $repoRoot "artifacts"
+$distDir = Join-Path $repoRoot "dist"
+
+New-Item -ItemType Directory -Force -Path $distDir | Out-Null
+
+$EnableCompressionInSingleFile = $EnableCompressionInSingleFile -and $SelfContained
+
+$variantParts = @()
+$variantParts += $(if ($SelfContained) { "sc" } else { "fd" })
+$variantParts += $(if ($SingleFile) { "single" } else { "multi" })
+if ($SingleFile -and $EnableCompressionInSingleFile) { $variantParts += "comp" }
+if ($ReadyToRun) { $variantParts += "r2r" }
+if ($Trim) { $variantParts += "trim" }
+if ($InvariantGlobalization) { $variantParts += "invglob" }
+$variant = ($variantParts -join "-")
+
+$defaultVariant = "fd-single"
+$publishBaseDir = Join-Path $artifactsDir "publish"
+$publishDir = Join-Path (Join-Path $publishBaseDir $Rid) $variant
+
+New-Item -ItemType Directory -Force -Path $publishDir | Out-Null
+
+$props = @(
+    "-p:SelfContained=$SelfContained",
+    "-p:PublishSingleFile=$SingleFile",
+    "-p:PublishReadyToRun=$ReadyToRun",
+    "-p:DebugType=None",
+    "-p:DebugSymbols=false"
+)
+
+if ($SingleFile) {
+    $props += "-p:IncludeNativeLibrariesForSelfExtract=true"
+    if ($SelfContained) {
+        $props += "-p:EnableCompressionInSingleFile=$EnableCompressionInSingleFile"
+    }
+}
+
+if ($Trim) {
+    $props += "-p:PublishTrimmed=true"
+    $props += "-p:TrimMode=partial"
+}
+
+if ($InvariantGlobalization) {
+    $props += "-p:InvariantGlobalization=true"
+}
+
+dotnet publish $project `
+    -c Release `
+    -r $Rid `
+    @props `
+    -o $publishDir
+
+if ($LASTEXITCODE -ne 0) {
+    throw "dotnet publish failed with exit code $LASTEXITCODE"
+}
+
+$zipName = if ($variant -eq $defaultVariant) { "TimerApp-Portable-$Rid.zip" } else { "TimerApp-Portable-$Rid-$variant.zip" }
+$zipPath = Join-Path $distDir $zipName
+
+if (Test-Path $zipPath) {
+    try { [System.IO.File]::Delete($zipPath) } catch { }
+}
+
+Compress-Archive -Path (Join-Path $publishDir "*") -DestinationPath $zipPath -Force
+
+$mainExe = Join-Path $publishDir "TimerApp.exe"
+if (Test-Path $mainExe) {
+    $exeMiB = [Math]::Round(((Get-Item $mainExe).Length / 1MB), 1)
+    Write-Host "EXE size: $exeMiB MiB"
+}
+$zipMiB = [Math]::Round(((Get-Item $zipPath).Length / 1MB), 1)
+Write-Host "ZIP size: $zipMiB MiB"
+
+Write-Host "Portable zip created:"
+Write-Host "  $zipPath"