feat(terminal): Add session logging, tab reorder, and settings polish

- Add per-tab Log button: record session output to logs\[name]_yyyyMMdd_HHmmss.log
- Add Log All toolbar button to toggle logging on every open tab at once
- Add drag-to-reorder for top tabs (also rearranges grid layout cells)
- Polish Settings > Terminal: align all input boxes, soften folder browse button

Logs strip ANSI escapes and prefix each line with [yyyy-MM-dd HH:mm:ss.fff].
LogName per channel: Shell=ShellType, Serial=PortName, SSH=user@host.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/ETTerms/App/SettingsView.cs

@@ -107,23 +107,31 @@ public sealed class SettingsView : UserControl
         shellType.Text = s.ShellType;
         flow.Controls.Add(MakeRow("Terminal Shell", shellType));
 
-        var shellDir = new TextBox { Width = 160, BackColor = Theme.TabBack, ForeColor = Theme.Text, Font = Theme.UiFont, Text = s.ShellStartupDir, BorderStyle = BorderStyle.FixedSingle };
+        // 用一個帶邊框的容器包住「輸入框 + 瀏覽鈕」，讓兩者看起來像同一個欄位
+        var dirPanel = new Panel { Width = InputWidth, Height = 24, BackColor = Theme.TabBack, BorderStyle = BorderStyle.FixedSingle };
+        var shellDir = new TextBox { BackColor = Theme.TabBack, ForeColor = Theme.Text, Font = Theme.UiFont, Text = s.ShellStartupDir, BorderStyle = BorderStyle.None };
         var browseBtn = new Button
         {
-            Text = "📁", Width = 30, Height = 22, FlatStyle = FlatStyle.Flat,
-            ForeColor = Theme.Text, BackColor = Theme.TabBack, Font = Theme.UiFont, Cursor = Cursors.Hand
+            Text = "…", Width = 26, FlatStyle = FlatStyle.Flat,
+            ForeColor = Theme.TextDim, BackColor = Theme.TabBack, Font = Theme.UiFont, Cursor = Cursors.Hand
         };
-        browseBtn.FlatAppearance.BorderColor = Theme.Border;
+        // 無邊框、暗色文字、與輸入框同底色 → 不再突兀
+        browseBtn.FlatAppearance.BorderSize = 0;
+        browseBtn.FlatAppearance.MouseOverBackColor = Theme.Hover;
         browseBtn.Click += (_, _) =>
         {
             using var dlg = new FolderBrowserDialog { SelectedPath = shellDir.Text };
             if (dlg.ShowDialog(this) == DialogResult.OK) shellDir.Text = dlg.SelectedPath;
         };
-        var dirPanel = new Panel { Width = 200, Height = 24 };
+        // 文字框置中於容器、瀏覽鈕貼右
         shellDir.Dock = DockStyle.Fill;
+        shellDir.Margin = new Padding(0);
         browseBtn.Dock = DockStyle.Right;
-        dirPanel.Controls.Add(shellDir);
+        var dirInner = new Panel { Dock = DockStyle.Fill, BackColor = Theme.TabBack, Padding = new Padding(4, 3, 0, 0) };
+        dirInner.Controls.Add(shellDir);
+        // 先加靠右的按鈕、再加 Fill 容器，避免 Fill 蓋到按鈕下方
         dirPanel.Controls.Add(browseBtn);
+        dirPanel.Controls.Add(dirInner);
         flow.Controls.Add(MakeRow("Startup Directory", dirPanel));
         flow.Controls.Add(MakeSpacer(12));
 
@@ -268,12 +276,25 @@ public sealed class SettingsView : UserControl
     }
 
     // ── Helpers ──
+    private const int LabelWidth = 150;   // 標籤欄固定寬度
+    private const int InputWidth = 200;   // 所有輸入框統一寬度
+
     private static Panel MakeRow(string label, Control control)
     {
-        var row = new Panel { Width = 400, Height = 34, Margin = new Padding(0, 4, 0, 4) };
-        control.Dock = DockStyle.Right;
+        var row = new Panel { Width = LabelWidth + InputWidth, Height = 32, Margin = new Padding(0, 3, 0, 3) };
+
+        // 統一輸入框寬度 + 左緣對齊（不再 Dock.Right，避免右對齊造成左緣參差）
+        control.Width = InputWidth;
+        int top = (row.Height - control.Height) / 2;
+        control.Location = new Point(LabelWidth, top < 0 ? 0 : top);
+
         row.Controls.Add(control);
-        row.Controls.Add(new Label { Text = label, Dock = DockStyle.Left, Width = 160, ForeColor = Theme.Text, Font = Theme.UiFont, TextAlign = ContentAlignment.MiddleLeft });
+        row.Controls.Add(new Label
+        {
+            Text = label, AutoSize = false, Width = LabelWidth, Height = row.Height,
+            Location = new Point(0, 0), ForeColor = Theme.Text, Font = Theme.UiFont,
+            TextAlign = ContentAlignment.MiddleLeft
+        });
         return row;
     }
 

src/ETTerms/App/Workspace/WorkspaceView.cs

@@ -23,6 +23,7 @@ public sealed class WorkspaceView : UserControl
     }
 
     private readonly FlowLayoutPanel _toolbar;
+    private readonly Button _logAll;
     private readonly Panel _tabStrip;
     private readonly Panel _body;
     private readonly Label _empty;
@@ -32,6 +33,12 @@ public sealed class WorkspaceView : UserControl
     private int _rows = 1, _cols = 1;
     private Session? _hoverTab;
 
+    // 拖曳排序狀態
+    private Session? _dragTab;     // 按住中的分頁（候選拖曳對象）
+    private int _dragStartX;       // 按下時的滑鼠 X，用來判斷是否超過拖曳門檻
+    private bool _dragging;        // 是否已進入拖曳
+    private const int DragThreshold = 5;
+
     private const int StripH = 30;
     private const int TabW = 180;
     private const int CloseSz = 14;
@@ -44,9 +51,12 @@ public sealed class WorkspaceView : UserControl
         Dock = DockStyle.Fill;
         BackColor = Theme.WorkspaceBack;
 
+        // 頂部工具列容器：左側為 Layout/Run 群組（Fill），右側為 Log All（Dock Right）
+        var topBar = new Panel { Dock = DockStyle.Top, Height = 38, BackColor = Theme.RailBack };
+
         _toolbar = new FlowLayoutPanel
         {
-            Dock = DockStyle.Top, Height = 38, BackColor = Theme.RailBack,
+            Dock = DockStyle.Fill, BackColor = Theme.RailBack,
             Padding = new Padding(8, 6, 8, 6), WrapContents = false
         };
         _toolbar.Controls.Add(new Label
@@ -62,11 +72,24 @@ public sealed class WorkspaceView : UserControl
         _toolbar.Controls.Add(MakeActionButton("▶ Group2", 90, 4, (_, _) => OnRunGroup(2)));
         _toolbar.Controls.Add(MakeActionButton("▶ Group3", 90, 4, (_, _) => OnRunGroup(3)));
 
+        // ── 右上角：Log All（一次開/關所有分頁側錄）──
+        var rightBar = new FlowLayoutPanel
+        {
+            Dock = DockStyle.Right, AutoSize = true, BackColor = Theme.RailBack,
+            Padding = new Padding(0, 6, 8, 6), WrapContents = false
+        };
+        _logAll = MakeActionButton("⏺ Log All", 96, 0, OnToggleLogAll);
+        rightBar.Controls.Add(_logAll);
+
+        topBar.Controls.Add(_toolbar);  // Fill（先加 → 後 dock → 吃剩餘空間）
+        topBar.Controls.Add(rightBar);  // Right（後加 → 先 dock → 佔右側）
+
         _tabStrip = new Panel { Dock = DockStyle.Top, Height = StripH, BackColor = Theme.RailBack };
         _tabStrip.Paint += OnStripPaint;
         _tabStrip.MouseDown += OnStripMouseDown;
         _tabStrip.MouseMove += OnStripMouseMove;
-        _tabStrip.MouseLeave += (_, _) => { _hoverTab = null; _tabStrip.Invalidate(); };
+        _tabStrip.MouseUp += OnStripMouseUp;
+        _tabStrip.MouseLeave += (_, _) => { if (!_dragging) { _hoverTab = null; _tabStrip.Invalidate(); } };
         SetDoubleBuffered(_tabStrip);
 
         _body = new Panel { Dock = DockStyle.Fill, BackColor = Theme.WorkspaceBack };
@@ -80,7 +103,7 @@ public sealed class WorkspaceView : UserControl
 
         Controls.Add(_body);        // Fill 先加
         Controls.Add(_tabStrip);    // Top
-        Controls.Add(_toolbar);     // Top（最上）
+        Controls.Add(topBar);       // Top（最上）
         _body.Controls.Add(_empty);
     }
 
@@ -251,7 +274,15 @@ public sealed class WorkspaceView : UserControl
         foreach (var s in _sessions)
         {
             if (s.CloseRect.Contains(e.Location)) { CloseSession(s); return; }
-            if (s.TabBounds.Contains(e.Location)) { _active = s; Relayout(); return; }
+            if (s.TabBounds.Contains(e.Location))
+            {
+                _active = s;
+                _dragTab = s;            // 記下候選拖曳對象，超過門檻才真的開始拖
+                _dragStartX = e.X;
+                _dragging = false;
+                Relayout();
+                return;
+            }
         }
     }
 
@@ -270,12 +301,47 @@ public sealed class WorkspaceView : UserControl
 
     private void OnStripMouseMove(object? sender, MouseEventArgs e)
     {
+        // 拖曳排序：按住某分頁並橫向移動，依滑鼠 X 即時換位
+        if (e.Button == MouseButtons.Left && _dragTab != null)
+        {
+            if (!_dragging && Math.Abs(e.X - _dragStartX) > DragThreshold)
+            {
+                _dragging = true;
+                _tabStrip.Cursor = Cursors.SizeWE;
+            }
+            if (_dragging)
+            {
+                int target = Math.Clamp(e.X / TabW, 0, _sessions.Count - 1);
+                int cur = _sessions.IndexOf(_dragTab);
+                if (cur >= 0 && target != cur)
+                {
+                    _sessions.RemoveAt(cur);
+                    _sessions.Insert(target, _dragTab);
+                    _tabStrip.Invalidate();
+                }
+            }
+            return;
+        }
+
         LayoutTabs();
         Session? ht = null;
         foreach (var s in _sessions) if (s.TabBounds.Contains(e.Location)) { ht = s; break; }
         if (ht != _hoverTab) { _hoverTab = ht; _tabStrip.Invalidate(); }
     }
 
+    private void OnStripMouseUp(object? sender, MouseEventArgs e)
+    {
+        bool reordered = _dragging;
+        _dragTab = null;
+        _dragging = false;
+        _tabStrip.Cursor = Cursors.Default;
+        if (reordered)
+        {
+            RefreshGroupLabels();   // Group 內編號（A/B/C…）依新順序更新
+            Relayout();             // 重鋪格子，讓 layout 位置跟著新分頁順序
+        }
+    }
+
     private void OnStripPaint(object? sender, PaintEventArgs e)
     {
         var g = e.Graphics;
@@ -284,11 +350,15 @@ public sealed class WorkspaceView : UserControl
         foreach (var s in _sessions)
         {
             bool active = s == _active, hover = s == _hoverTab;
-            using (var b = new SolidBrush(active ? Theme.TabActiveBack : hover ? Theme.Hover : Theme.TabBack))
+            bool drag = _dragging && s == _dragTab;
+            using (var b = new SolidBrush(drag ? Theme.Hover : active ? Theme.TabActiveBack : hover ? Theme.Hover : Theme.TabBack))
                 g.FillRectangle(b, s.TabBounds);
             if (active)
                 using (var bar = new SolidBrush(Theme.Accent))
                     g.FillRectangle(bar, new Rectangle(s.TabBounds.Left, s.TabBounds.Bottom - 2, s.TabBounds.Width, 2));
+            if (drag)
+                using (var pen = new Pen(Theme.Accent, 1))
+                    g.DrawRectangle(pen, new Rectangle(s.TabBounds.Left, s.TabBounds.Top, s.TabBounds.Width - 1, s.TabBounds.Height - 1));
             using (var dot = new SolidBrush(s.IsSsh ? Theme.SshColor : Theme.SerialColor))
                 g.FillEllipse(dot, s.TabBounds.Left + 9, StripH / 2 - 4, 8, 8);
             var tr = new Rectangle(s.TabBounds.Left + 22, s.TabBounds.Top, s.TabBounds.Width - 22 - CloseSz - 10, StripH);
@@ -328,6 +398,41 @@ public sealed class WorkspaceView : UserControl
         return b;
     }
 
+    // ── Log All（一次開/關所有分頁側錄） ──────────────────────
+    private void OnToggleLogAll(object? sender, EventArgs e)
+    {
+        if (_sessions.Count == 0)
+        {
+            MessageBox.Show(this, "No open sessions to log.", "Log All", MessageBoxButtons.OK, MessageBoxIcon.Information);
+            return;
+        }
+
+        // 只要還有分頁沒在側錄 → 全部開始；否則全部停止。
+        bool startAll = _sessions.Any(s => !s.Page.IsLogging);
+        if (startAll)
+        {
+            int failed = 0;
+            foreach (var s in _sessions)
+                if (!s.Page.StartLog()) failed++;
+            SetLogAllActive(true);
+            if (failed > 0)
+                MessageBox.Show(this, $"{failed} session(s) failed to start logging. See app log for details.",
+                    "Log All", MessageBoxButtons.OK, MessageBoxIcon.Warning);
+        }
+        else
+        {
+            foreach (var s in _sessions) s.Page.StopLog();
+            SetLogAllActive(false);
+        }
+    }
+
+    private void SetLogAllActive(bool on)
+    {
+        _logAll.Text = on ? "⏺ Logging All" : "⏺ Log All";
+        _logAll.Width = on ? 110 : 96;
+        _logAll.ForeColor = on ? Theme.SerialColor : Theme.Text;
+    }
+
     // ── Run All（個別執行，拒絕 waitall/sendlnall） ──────────
     private async void OnRunAllSerial(object? sender, EventArgs e)
     {

src/ETTerms/Infrastructure/SessionLogger.cs

@@ -0,0 +1,103 @@
+using System.Text;
+using System.Text.RegularExpressions;
+
+namespace ETTerms.Infrastructure;
+
+/// <summary>
+/// 單一分頁的終端機輸出側錄器。按下 Log 按鈕時建立，再按一次（或關閉分頁）時 Dispose。
+///
+/// - 檔案位置：&lt;exe 路徑&gt;\logs\
+/// - 檔名格式：<c>[連線識別]_yyyyMMdd_HHmmss.log</c>，例如 <c>[PowerShell]_20260603_212400.log</c>
+/// - 內容格式：每行 <c>[yyyy-MM-dd HH:mm:ss.fff] 文字</c>
+///
+/// 收到的位元組會去除 ANSI/VT escape 序列後依換行切行，每完成一行才寫出並補上收到當下的時間戳，
+/// 未滿一行的殘段先留在緩衝區，待後續資料或 Dispose 時補寫。
+/// </summary>
+public sealed class SessionLogger : IDisposable
+{
+    // 去除 CSI / OSC / 單字元 escape 等 ANSI 控制序列
+    private static readonly Regex AnsiRegex = new(
+        @"\x1B\][^\x07\x1B]*(\x07|\x1B\\)|\x1B[@-Z\\-_]|\x1B\[[0-?]*[ -/]*[@-~]",
+        RegexOptions.Compiled);
+
+    private readonly object _lock = new();
+    private readonly StreamWriter _writer;
+    private readonly StringBuilder _pending = new();
+    private bool _disposed;
+
+    /// <summary>實際寫入的完整檔案路徑。</summary>
+    public string FilePath { get; }
+
+    private SessionLogger(string filePath)
+    {
+        FilePath = filePath;
+        _writer = new StreamWriter(filePath, append: true, new UTF8Encoding(false)) { AutoFlush = true };
+    }
+
+    /// <summary>
+    /// 為某個連線建立側錄器。<paramref name="logName"/> 例如 "PowerShell" / "COM17" / "etwen@192.168.1.50"。
+    /// </summary>
+    public static SessionLogger Start(string logName)
+    {
+        string dir = Path.Combine(AppContext.BaseDirectory, "logs");
+        Directory.CreateDirectory(dir);
+
+        string safe = Sanitize(logName);
+        string fileName = $"[{safe}]_{DateTime.Now:yyyyMMdd_HHmmss}.log";
+        string path = Path.Combine(dir, fileName);
+        return new SessionLogger(path);
+    }
+
+    /// <summary>餵入終端機收到的原始位元組（UTF-8 解碼後側錄）。</summary>
+    public void Write(byte[] data)
+    {
+        if (_disposed || data.Length == 0) return;
+        string text = Encoding.UTF8.GetString(data);
+        string clean = AnsiRegex.Replace(text, "").Replace("\r", "");
+        if (clean.Length == 0) return;
+
+        lock (_lock)
+        {
+            if (_disposed) return;
+            string stamp = $"[{DateTime.Now:yyyy-MM-dd HH:mm:ss.fff}] ";
+            int start = 0;
+            for (int i = 0; i < clean.Length; i++)
+            {
+                if (clean[i] != '\n') continue;
+                _pending.Append(clean, start, i - start);
+                _writer.WriteLine(stamp + _pending);
+                _pending.Clear();
+                start = i + 1;
+            }
+            if (start < clean.Length)
+                _pending.Append(clean, start, clean.Length - start);
+        }
+    }
+
+    public void Dispose()
+    {
+        lock (_lock)
+        {
+            if (_disposed) return;
+            _disposed = true;
+            try
+            {
+                if (_pending.Length > 0)
+                    _writer.WriteLine($"[{DateTime.Now:yyyy-MM-dd HH:mm:ss.fff}] {_pending}");
+                _writer.Dispose();
+            }
+            catch { /* 收尾失敗不可拖垮 App */ }
+        }
+    }
+
+    /// <summary>把連線識別字串清成合法檔名（移除 \ / : * ? " &lt; &gt; | 等）。</summary>
+    private static string Sanitize(string name)
+    {
+        if (string.IsNullOrWhiteSpace(name)) return "session";
+        var sb = new StringBuilder(name.Length);
+        var invalid = Path.GetInvalidFileNameChars();
+        foreach (char c in name)
+            sb.Append(Array.IndexOf(invalid, c) >= 0 ? '_' : c);
+        return sb.ToString();
+    }
+}

src/ETTerms/Sessions/ISessionChannel.cs

@@ -9,6 +9,12 @@ public interface ISessionChannel : IDisposable
     /// <summary>收到遠端資料（背景執行緒觸發，訂閱者需自行 Invoke 回 UI thread）。</summary>
     event Action<byte[]>? DataReceived;
 
+    /// <summary>
+    /// 用於 log 檔名的連線識別字串：
+    /// Shell → "PowerShell"；Serial → "COM17"；SSH → "etwen@192.168.1.50"。
+    /// </summary>
+    string LogName { get; }
+
     /// <summary>建立連線；失敗丟例外。</summary>
     void Open();
 

src/ETTerms/Sessions/SerialChannel.cs

@@ -15,6 +15,8 @@ public sealed class SerialChannel : ISessionChannel
 
     public event Action<byte[]>? DataReceived;
 
+    public string LogName => _portName;
+
     public SerialChannel(SerialSettings s)
     {
         _portName = s.PortName;

src/ETTerms/Sessions/SessionPage.cs

@@ -21,8 +21,9 @@ public sealed class SessionPage : UserControl
     private readonly TerminalView _term;
     private readonly ScriptRunner _runner = new();
     private readonly Label _status;
-    private readonly Button _run, _stop;
+    private readonly Button _run, _stop, _log;
     private bool _started;
+    private SessionLogger? _logger;
 
     /// <summary>底層連線通道。</summary>
     public ISessionChannel Channel => _channel;
@@ -78,9 +79,12 @@ public sealed class SessionPage : UserControl
         _run = MakeBarButton("▶ Script", OnRunScript);
         _stop = MakeBarButton("■ Stop", (_, _) => _runner.Cancel());
         _stop.Enabled = false;
+        _log = MakeBarButton("⏺ Log", OnToggleLog);
+        _log.Width = 92;            // 容納 "⏺ Logging" 不被截字
         bar.Controls.Add(_status);  // Fill 先加
-        bar.Controls.Add(_run);     // Right
-        bar.Controls.Add(_stop);    // Right
+        bar.Controls.Add(_log);     // Right（最左：Log）
+        bar.Controls.Add(_run);     // Right（中：Script）
+        bar.Controls.Add(_stop);    // Right（最右：Stop）
 
         _term = new TerminalView(new TerminalProfile()) { Dock = DockStyle.Fill };
         _term.SendData += data => _channel.Write(data);
@@ -113,6 +117,56 @@ public sealed class SessionPage : UserControl
         await _runner.RunAsync(content, name, _channel);
     }
 
+    /// <summary>此分頁是否正在側錄。</summary>
+    public bool IsLogging => _logger != null;
+
+    /// <summary>開始側錄（供 Log All 批次呼叫）。成功或已在側錄回傳 true。</summary>
+    public bool StartLog()
+    {
+        if (_logger != null) return true;
+        try
+        {
+            _logger = SessionLogger.Start(_channel.LogName);
+            UpdateLogButton();
+            AppLogger.Info($"Session log started: {_logger.FilePath}");
+            return true;
+        }
+        catch (Exception ex)
+        {
+            AppLogger.LogError("Start session log failed", ex);
+            return false;
+        }
+    }
+
+    /// <summary>停止側錄並收尾關檔。</summary>
+    public void StopLog()
+    {
+        if (_logger == null) return;
+        string path = _logger.FilePath;
+        _logger.Dispose();
+        _logger = null;
+        UpdateLogButton();
+        AppLogger.Info($"Session log stopped: {path}");
+    }
+
+    private void OnToggleLog(object? sender, EventArgs e)
+    {
+        if (_logger == null)
+        {
+            if (!StartLog())
+                MessageBox.Show(this, "Failed to start log. See app log for details.", "Log", MessageBoxButtons.OK, MessageBoxIcon.Warning);
+        }
+        else StopLog();
+    }
+
+    private void UpdateLogButton()
+    {
+        bool on = _logger != null;
+        _log.Text = on ? "⏺ Logging" : "⏺ Log";
+        _log.ForeColor = on ? Theme.SerialColor : Theme.Text;
+        _log.FlatAppearance.BorderColor = on ? Theme.SerialColor : Theme.Border;
+    }
+
     private static bool ContainsGroupCommands(string content)
     {
         foreach (var line in content.Split('\n'))
@@ -172,6 +226,8 @@ public sealed class SessionPage : UserControl
 
     private void OnDataReceived(byte[] data)
     {
+        // 側錄不依賴 UI thread，直接在背景緒寫檔（SessionLogger 內部自鎖）。
+        _logger?.Write(data);
         if (IsDisposed || !IsHandleCreated) return;
         if (InvokeRequired) BeginInvoke(() => _term.Feed(data));
         else _term.Feed(data);
@@ -183,6 +239,8 @@ public sealed class SessionPage : UserControl
         {
             _runner.Cancel();
             _channel.DataReceived -= OnDataReceived;
+            _logger?.Dispose();
+            _logger = null;
             SessionManager.Unregister(_channel);
             _channel.Dispose();
         }

src/ETTerms/Sessions/ShellChannel.cs

@@ -24,6 +24,8 @@ public sealed class ShellChannel : ISessionChannel
 
     public event Action<byte[]>? DataReceived;
 
+    public string LogName => _settings.ShellType;
+
     public ShellChannel(ShellSettings settings) => _settings = settings;
 
     public void Open()

src/ETTerms/Sessions/SshChannel.cs

@@ -23,6 +23,8 @@ public sealed class SshChannel : ISessionChannel
 
     public event Action<byte[]>? DataReceived;
 
+    public string LogName => $"{_ssh.Username}@{_ssh.Host}";
+
     public SshChannel(Connection conn)
     {
         _ssh = conn.Ssh ?? new SshSettings();