merge: v0.7.2 — the whole UI now scales correctly at 125% / 150% display scaling

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MKF7C75bhA4ArQhyMpnsxU

CLAUDE.md

@@ -10,6 +10,8 @@ ETTerms 是一個 **C# .NET 8 WinForms** 的原生 Windows 終端機工作台，
 
 **進度：** Phase 1–5 ✅、Phase 6 ✅（TTL 引擎 + Group 同步，SSH 待驗收）、Phase 7 ✅（Settings/About）、Phase 8 ✅（PDU + Shell/ConPTY + SFTP + Settings 擴充）、Phase 9 ✅（Serial MCP server：**GUI 持有 COM port，MCP 經本機 named pipe 橋接**，AI 收發的資料即時以 `[AI]` 標色顯示在 GUI）、**Phase 10 ✅（v0.6.0）內建 AI Assistant**（見下）。打包待指示。
 
+**v0.7.2：** **高 DPI（125%/150%）全面修正** —— 字型以點數指定會隨 DPI 放大、寫死像素不會，導致 user 機器（筆電常見 125%/150%）上 SessionPage 的 Log/Script/Stop 被截字、150% 時工具列 AI Chat 被裁、Quick Connect 對話框疊字。**根因**：`MainForm` 的 `AutoScaleMode.Dpi` 只在 Form 初始化當下對「已存在」的控制項縮放一次，本專案 UI 幾乎全是執行期才 new 的（SessionPage 開分頁才建），完全吃不到（實測 125% 下 sidebar 250px 原封不動）。**作法**：(1) `Theme.cs` 加 `Dpi()` 擴充（`px × DeviceDpi/96`，同 `ActivityRail.ItemSize` 的既有做法），全 app ~70 處裸像素尺寸（sidebar/工具列/tab 列/Settings 輸入框/表格/Ctrl+F 搜尋列/DarkScrollBar 寬）全部包上；(2) 會換字的按鈕（⏺ Log↔Logging、⏺ Log All↔Logging All）改 `TextRenderer.MeasureText` 量最長字串取寬（`SessionPage.BarButtonWidth`）／AutoSize；(3) 多行說明 Label 改 `AutoSize = true` 不再固定框；(4) 絕對座標對話框（`Dialogs/`）在 `DarkDialog` 基底加 `ApplyDpiScale()`（建構子最後 `Control.Scale(DeviceDpi/96f)` 一次縮放全樹）；(5) `MainForm` 改 `AutoScaleMode.None` + `ClientSize/MinimumSize` 手動 `Dpi()`（明確自己管，避免未來 .NET 行為改變造成雙重縮放）。⚠️ **新增 UI 的鐵則：任何寫死像素尺寸都要 `this.Dpi(n)`，100% 看起來正常不代表對（`Dpi()` 在 96 DPI 是恆等）**。已知限制：執行中改系統縮放需重啟。通用規範已沉淀到 `create-architecture` skill 的「WinApp DPI Scaling Pattern」。
+
 **v0.7.1：** 新增 TTL 指令 **`sendlnretry '文字' '確認關鍵字' [最多送出次數]`**（`TTLInterpreter.SendLnRetry` + `WaitConfirm`）——送出後等確認關鍵字，沒等到就**重送**；次數省略 = 無限重送，命中 `result=1`、用完次數 `result=0` 且**繼續執行**（不中止腳本）。**動機**：裝置開機、console 剛被 shell 接手的瞬間會丟棄輸入（tty 重開 / termios flush），`sendln` 送出的整行無聲消失（裝置不回顯、不執行），後面的 `wait` 就永遠卡住；這是機率性的，`pause` 只能調機率、無法根治（實測 45 輪 power-cycle 中 3 輪中招，且**中招時間點與成功時完全重疊**）。**為何需要新指令而非用 `wait` 重試**：單字串 `wait` 逾時是 throw 中止腳本（刻意設計，見下方「注意事項」），TeraTerm 的 `wait`→`if result = 0 then goto retry` 重送寫法在 ETTerms 寫不出來。**語意**：每次送出前清空 `_recv`（確保比對到的是這次送出的回應）；命中只消費到**第一次**出現處，後續輸出留給接下來的 `wait`；刻意**不套 `SettleAndConsume` 的 settle**（關鍵字出現本身就證明裝置收到了）；每次等待逾時 `timeout`/`mtimeout` 有設就用設定值、**沒設預設 3 秒**（此處 0=無限等於永不重送，故不沿用 `wait` 的 0=無限）。⚠️ 確認關鍵字要挑「命令真的有跑」的輸出，**不要挑指令回顯**——tty echo 由核心產生，不保證命令被 shell 讀走。文件：[docs/ttl-script-reference.md](docs/ttl-script-reference.md#送出並確認sendlnretry)。
 
 **v0.7.0：** **AI Chat 改用 WebView2 渲染**（真氣泡 + Markdown + thinking 動畫泡）。訊息區從 RichTextBox 換成 `WebView2`：user 右泡 / AI 左泡、AI 回覆走 **Markdig** markdown→HTML（程式碼區塊/表格/清單）、送出後顯示會動的 thinking「…」泡（`AgentHost.Status "thinking"` → `showThinking()`，收到 `AssistantText` 時 `hideThinking()` 再加 AI 泡）。HTML 模板全內嵌於 `Ai/ChatHtml.cs`（`NavigateToString`,無外部依賴）,C# 經 `ExecuteScriptAsync` 呼叫 JS 函式;WebView2 async 初始化,就緒前的呼叫先入 `_pending` 佇列、`NavigationCompleted` 後 flush。使用者資料夾 `%LocalAppData%\ETTerms\WebView2`（避開 Program Files 唯讀）。底部控制列（輸入框/模型下拉/Send）仍 WinForms。新增 NuGet `Microsoft.Web.WebView2` + `Markdig`;依賴 WebView2 Runtime（Win11 內建,缺時 hint 顯示錯誤）。⚠️ **publish 要確認 WebView2 native（`runtimes/win-x64/native/WebView2Loader.dll`）有進產物**。**工具呼叫上限可設定**（`AppSettings.AiMaxToolRounds`,Settings → AI Assistant,`AgentHost` 建構子傳入）：**0 = 無上限**（自動化長跑;每輪燒 token,聊天視窗 Send 鈕在執行中變 **Stop**,經 `CancellationToken` 中止）,預設 30。

docs/release-notes/v0.7.2.md

@@ -0,0 +1,39 @@
+# v0.7.2 — The whole UI now scales correctly at 125% / 150% display scaling
+
+## 🐛 Bug fixes
+
+**Buttons and panels no longer get clipped at Windows display scaling above 100%**
+* Fixed: on machines set to 125% or 150% scaling (most laptops), text grew with the scale but
+  many controls didn't — the **Log / Script / Stop** buttons on each session tab were truncated
+  or hidden, the **✨ AI Chat** toolbar button lost its bottom edge at 150%, and dialogs like
+  **Quick Connect** could clip or overlap their fields.
+* Every fixed pixel size in the app now converts to your actual display scale, the same way
+  text always did: the sidebar, toolbars, tab strips, all Settings inputs and tables, the PDU
+  status grid, the AI chat pane, dialogs, the Ctrl+F search bar — even the scrollbar width.
+* Buttons that change their text (like **⏺ Log → ⏺ Logging**) now size themselves from the
+  actual rendered text width, so they can never truncate again at any scale.
+* At 100% scaling nothing changes — the conversion is exact there, so existing setups look
+  identical to before.
+
+**Known limitation**
+* If you change the Windows display scaling while ETTerms is running, restart the app to
+  re-layout at the new scale.
+
+## 📦 Downloads
+
+Two builds are produced:
+
+| Build | Needs .NET 8 Desktop Runtime? | Notes |
+|-------|-------------------------------|-------|
+| **Standard** (`ETTerms_v0.7.2`) | ✅ Yes | Smaller; for machines that already have the runtime |
+| **Portable** (`ETTerms_v0.7.2_portable`) | ❌ No | Runtime bundled — unzip and run, no install / admin needed |
+
+Run `ETTerms v0.7.2.exe`.
+
+## 🔗 Links
+* TTL reference:
+  [docs/ttl-script-reference.md](https://github.com/ETWen/ETTerms/blob/main/docs/ttl-script-reference.md)
+* Architecture:
+  [ARCHITECTURE.md](https://github.com/ETWen/ETTerms/blob/main/ARCHITECTURE.md)
+
+**Full changelog:** [v0.7.1...v0.7.2](https://github.com/ETWen/ETTerms/compare/v0.7.1...v0.7.2)

src/ETTerms/App/AboutView.cs

@@ -20,7 +20,7 @@ public sealed class AboutView : UserControl
         // ── Main layout: left fixed + right scrollable ──
         var left = new FlowLayoutPanel
         {
-            Dock = DockStyle.Left, Width = 380, FlowDirection = FlowDirection.TopDown,
+            Dock = DockStyle.Left, Width = this.Dpi(380), FlowDirection = FlowDirection.TopDown,
             WrapContents = false, AutoScroll = true, Padding = new Padding(20),
             BackColor = Theme.WorkspaceBack
         };
@@ -105,10 +105,10 @@ public sealed class AboutView : UserControl
         {
             FlowDirection = FlowDirection.TopDown, WrapContents = false,
             AutoSize = true, AutoSizeMode = AutoSizeMode.GrowAndShrink,
-            MinimumSize = new Size(width, height),
             Margin = new Padding(0, 0, 0, 12),
             BackColor = Theme.TabBack, Padding = new Padding(12)
         };
+        card.MinimumSize = new Size(card.Dpi(width), card.Dpi(height));
         build(card);
         return card;
     }
@@ -118,9 +118,10 @@ public sealed class AboutView : UserControl
     {
         var card = new Panel
         {
-            Width = 340, Height = 300, Margin = new Padding(0, 0, 0, 12),
+            Margin = new Padding(0, 0, 0, 12),
             BackColor = Theme.TabBack, Padding = new Padding(12)
         };
+        card.Size = new Size(card.Dpi(340), card.Dpi(300));
         var flow = new FlowLayoutPanel
         {
             Dock = DockStyle.Fill, FlowDirection = FlowDirection.TopDown,
@@ -133,7 +134,7 @@ public sealed class AboutView : UserControl
         {
             flow.Controls.Add(new PictureBox
             {
-                Width = 312, Height = 268, Margin = new Padding(0, 4, 0, 4),
+                Width = card.Dpi(312), Height = card.Dpi(268), Margin = new Padding(0, 4, 0, 4),
                 SizeMode = PictureBoxSizeMode.Zoom,
                 BackColor = Theme.TabBack, Image = iconImg.ToBitmap()
             });
@@ -164,7 +165,7 @@ public sealed class AboutView : UserControl
         };
         row.Controls.Add(new Label
         {
-            Text = label, AutoSize = true, MinimumSize = new Size(70, 0),
+            Text = label, AutoSize = true, MinimumSize = new Size(row.Dpi(70), 0),
             ForeColor = Theme.TextDim, Font = Theme.UiFont,
             TextAlign = ContentAlignment.MiddleLeft, Margin = new Padding(0, 0, 8, 0)
         });
@@ -183,6 +184,13 @@ public sealed class AboutView : UserControl
 
     private static readonly ChangelogEntry[] Changelog =
     [
+        new("0.7.2", new DateOnly(2026, 7, 16), "The whole UI now scales correctly at 125% / 150% display scaling",
+        [
+            "Fixed: at Windows display scaling above 100%, text grew with the scale but many buttons and panels didn't — the Log / Script / Stop buttons on each session got clipped, the AI Chat toolbar button lost its bottom edge at 150%, and dialogs like Quick Connect could overlap their fields.",
+            "Every fixed pixel size in the app — sidebars, toolbars, tab strips, settings inputs, tables, dialogs, the Ctrl+F search bar, even the scrollbar width — now converts to your actual display scale, the same way a button's text does.",
+            "Buttons that show changing text (like ⏺ Log / ⏺ Logging) now size themselves from the actual rendered text width, so they can never truncate again at any scale.",
+            "Note: if you change the Windows scaling while ETTerms is running, restart the app to re-layout at the new scale.",
+        ]),
         new("0.7.1", new DateOnly(2026, 7, 16), "Scripts no longer hang when a booting device swallows a command",
         [
             "Fixed: a device that is still booting can silently throw away what you send it, the moment its shell takes over the console — the line never echoes and never runs, so the wait after it sat there forever and your test rig was dead until someone noticed. Adding a pause before the send only made it rarer: in one overnight 45-cycle power-cycle run, 3 cycles still hung this way.",

src/ETTerms/App/AiChatView.cs

@@ -48,7 +48,7 @@ public sealed class AiChatView : UserControl
         _web = new WebView2 { Dock = DockStyle.Fill };
 
         // ── 底部控制列：輸入框(Fill) + 右下角欄(模型下拉在上、Send 在下) ──
-        var bottom = new Panel { Dock = DockStyle.Bottom, Height = 96, BackColor = Theme.RailBack, Padding = new Padding(10, 8, 10, 8) };
+        var bottom = new Panel { Dock = DockStyle.Bottom, Height = this.Dpi(96), BackColor = Theme.RailBack, Padding = new Padding(10, 8, 10, 8) };
 
         _input = new TextBox
         {
@@ -60,9 +60,9 @@ public sealed class AiChatView : UserControl
             if (e.KeyCode == Keys.Enter && !e.Shift && !_running) { e.Handled = e.SuppressKeyPress = true; OnSend(); }
         };
 
-        var rightCol = new Panel { Dock = DockStyle.Right, Width = 178, BackColor = Theme.RailBack, Padding = new Padding(8, 0, 0, 0) };
+        var rightCol = new Panel { Dock = DockStyle.Right, Width = this.Dpi(178), BackColor = Theme.RailBack, Padding = new Padding(8, 0, 0, 0) };
 
-        var modelWrap = new Panel { Dock = DockStyle.Top, Height = 24, BackColor = Theme.RailBack };
+        var modelWrap = new Panel { Dock = DockStyle.Top, Height = this.Dpi(26), BackColor = Theme.RailBack };
         _modelBox = new ComboBox
         {
             Dock = DockStyle.Fill, DropDownStyle = ComboBoxStyle.DropDownList,
@@ -78,7 +78,7 @@ public sealed class AiChatView : UserControl
         };
         var refreshBtn = new Button
         {
-            Text = "↻", Dock = DockStyle.Right, Width = 24, FlatStyle = FlatStyle.Flat,
+            Text = "↻", Dock = DockStyle.Right, Width = this.Dpi(24), FlatStyle = FlatStyle.Flat,
             ForeColor = Theme.TextDim, BackColor = Theme.TabBack, Font = Theme.UiFont, Cursor = Cursors.Hand
         };
         refreshBtn.FlatAppearance.BorderColor = Theme.Border;
@@ -86,7 +86,7 @@ public sealed class AiChatView : UserControl
         modelWrap.Controls.Add(_modelBox);   // Fill
         modelWrap.Controls.Add(refreshBtn);  // Right
 
-        var gap = new Panel { Dock = DockStyle.Top, Height = 6, BackColor = Theme.RailBack };
+        var gap = new Panel { Dock = DockStyle.Top, Height = this.Dpi(6), BackColor = Theme.RailBack };
 
         _send = new Button
         {
@@ -105,7 +105,7 @@ public sealed class AiChatView : UserControl
 
         _hint = new Label
         {
-            Dock = DockStyle.Top, Height = 40, BackColor = Color.FromArgb(60, 50, 30), ForeColor = Theme.Text,
+            Dock = DockStyle.Top, Height = this.Dpi(40), BackColor = Color.FromArgb(60, 50, 30), ForeColor = Theme.Text,
             Font = Theme.UiFont, TextAlign = ContentAlignment.MiddleCenter, Visible = false,
             Text = "尚未設定 AI Provider — 到 Settings → AI Assistant 填入 Base URL 與 API Key。"
         };

src/ETTerms/App/ConnectionSidebar.cs

@@ -44,7 +44,7 @@ public sealed class ConnectionSidebar : UserControl
 
     public ConnectionSidebar()
     {
-        Width = 250;
+        Width = this.Dpi(250);
         Dock = DockStyle.Left;
         BackColor = Theme.SidebarBack;
 
@@ -52,7 +52,7 @@ public sealed class ConnectionSidebar : UserControl
         // 高度 40 與右側 Workspace 工具列對齊，讓「CONNECTIONS / 連線清單」與右側分頁列同一條基準線
         var tabBar = new FlowLayoutPanel
         {
-            Dock = DockStyle.Top, Height = 40, BackColor = Theme.RailBack,
+            Dock = DockStyle.Top, Height = this.Dpi(40), BackColor = Theme.RailBack,
             Padding = new Padding(4, 7, 4, 0), WrapContents = false
         };
 
@@ -65,7 +65,7 @@ public sealed class ConnectionSidebar : UserControl
             var b = new Button
             {
                 Text = text, AutoSize = true, AutoSizeMode = AutoSizeMode.GrowAndShrink,
-                MinimumSize = new Size(70, 24), Padding = new Padding(8, 2, 8, 2),
+                MinimumSize = new Size(this.Dpi(70), this.Dpi(24)), Padding = new Padding(8, 2, 8, 2),
                 FlatStyle = FlatStyle.Flat,
                 ForeColor = Theme.Text, BackColor = Theme.TabBack, Font = Theme.UiFont,
                 Margin = new Padding(0, 0, 4, 0), Cursor = Cursors.Hand
@@ -90,7 +90,7 @@ public sealed class ConnectionSidebar : UserControl
         tabBar.Controls.Add(sftpBtn);
 
         // ── Sessions panel content ──
-        var header = new Panel { Dock = DockStyle.Top, Height = 34, BackColor = Theme.SidebarBack };
+        var header = new Panel { Dock = DockStyle.Top, Height = this.Dpi(34), BackColor = Theme.SidebarBack };
         var title = new Label
         {
             Text = "CONNECTIONS",
@@ -108,7 +108,7 @@ public sealed class ConnectionSidebar : UserControl
         header.Controls.Add(btnNewFolder);
         header.Controls.Add(btnNewConn);
 
-        var searchHost = new Panel { Dock = DockStyle.Top, Height = 32, BackColor = Theme.SidebarBack, Padding = new Padding(8, 2, 8, 4) };
+        var searchHost = new Panel { Dock = DockStyle.Top, Height = this.Dpi(32), BackColor = Theme.SidebarBack, Padding = new Padding(8, 2, 8, 4) };
         _search = new TextBox
         {
             Dock = DockStyle.Fill,
@@ -125,7 +125,7 @@ public sealed class ConnectionSidebar : UserControl
         {
             Text = "▷  Quick Connect",
             Dock = DockStyle.Top,
-            Height = 34,
+            Height = this.Dpi(34),
             FlatStyle = FlatStyle.Flat,
             ForeColor = Color.White,
             BackColor = Theme.Accent,
@@ -136,22 +136,22 @@ public sealed class ConnectionSidebar : UserControl
         quick.FlatAppearance.BorderSize = 0;
         quick.FlatAppearance.MouseOverBackColor = Theme.AccentDim;
         quick.Click += (_, _) => QuickConnect();
-        var quickHost = new Panel { Dock = DockStyle.Top, Height = 42, BackColor = Theme.SidebarBack, Padding = new Padding(8, 4, 8, 4) };
+        var quickHost = new Panel { Dock = DockStyle.Top, Height = this.Dpi(42), BackColor = Theme.SidebarBack, Padding = new Padding(8, 4, 8, 4) };
         quickHost.Controls.Add(quick);
 
         var shellBtn = new Button
         {
-            Text = "🖥  Local Shell", Dock = DockStyle.Top, Height = 30,
+            Text = "🖥  Local Shell", Dock = DockStyle.Top, Height = this.Dpi(30),
             FlatStyle = FlatStyle.Flat, ForeColor = Theme.Text, BackColor = Theme.TabBack,
             Font = Theme.UiFont, Cursor = Cursors.Hand
         };
         shellBtn.FlatAppearance.BorderColor = Theme.Border;
         shellBtn.FlatAppearance.MouseOverBackColor = Theme.Hover;
         shellBtn.Click += (_, _) => OpenLocalShell();
-        var shellHost = new Panel { Dock = DockStyle.Top, Height = 36, BackColor = Theme.SidebarBack, Padding = new Padding(8, 2, 8, 4) };
+        var shellHost = new Panel { Dock = DockStyle.Top, Height = this.Dpi(36), BackColor = Theme.SidebarBack, Padding = new Padding(8, 2, 8, 4) };
         shellHost.Controls.Add(shellBtn);
 
-        var toolbar = new Panel { Dock = DockStyle.Top, Height = 28, BackColor = Theme.SidebarBack };
+        var toolbar = new Panel { Dock = DockStyle.Top, Height = this.Dpi(28), BackColor = Theme.SidebarBack };
         var btnExpand = IconButton("⊞", "Expand All", (_, _) => SetAllExpanded(true));
         var btnCollapse = IconButton("⊟", "Collapse All", (_, _) => SetAllExpanded(false));
         btnExpand.Dock = DockStyle.Right;
@@ -171,8 +171,8 @@ public sealed class ConnectionSidebar : UserControl
             ShowRootLines = true,
             ShowPlusMinus = true,
             FullRowSelect = true,
-            ItemHeight = 26,
-            Indent = 18,
+            ItemHeight = this.Dpi(26),
+            Indent = this.Dpi(18),
             AllowDrop = true
         };
         _tree.NodeMouseDoubleClick += OnNodeDoubleClick;
@@ -213,15 +213,15 @@ public sealed class ConnectionSidebar : UserControl
         // Connection row
         var connRow = new FlowLayoutPanel
         {
-            Dock = DockStyle.Top, Height = 30, BackColor = Theme.SidebarBack,
+            Dock = DockStyle.Top, Height = this.Dpi(30), BackColor = Theme.SidebarBack,
             Padding = new Padding(4, 4, 4, 0), WrapContents = false
         };
         var sshLabel = new Label { Text = "SSH:", AutoSize = true, ForeColor = Theme.TextDim, Font = Theme.UiFont, Margin = new Padding(0, 4, 4, 0) };
-        var sshCombo = new ComboBox { Width = 120, DropDownStyle = ComboBoxStyle.DropDownList, BackColor = Theme.TabBack, ForeColor = Theme.Text, Font = Theme.UiFont };
+        var sshCombo = new ComboBox { Width = this.Dpi(120), DropDownStyle = ComboBoxStyle.DropDownList, BackColor = Theme.TabBack, ForeColor = Theme.Text, Font = Theme.UiFont };
         var connectBtn = new Button
         {
             Text = "Connect", AutoSize = true, AutoSizeMode = AutoSizeMode.GrowAndShrink,
-            MinimumSize = new Size(64, 24), Padding = new Padding(8, 2, 8, 2),
+            MinimumSize = new Size(this.Dpi(64), this.Dpi(24)), Padding = new Padding(8, 2, 8, 2),
             FlatStyle = FlatStyle.Flat,
             ForeColor = Theme.Text, BackColor = Theme.TabBack, Font = Theme.UiFont, Cursor = Cursors.Hand, Margin = new Padding(4, 0, 0, 0)
         };
@@ -233,7 +233,7 @@ public sealed class ConnectionSidebar : UserControl
         // Path bar
         _sftpPath = new TextBox
         {
-            Dock = DockStyle.Top, Height = 24, Text = "/",
+            Dock = DockStyle.Top, Height = this.Dpi(24), Text = "/",
             BackColor = Theme.TabBack, ForeColor = Theme.Accent, Font = Theme.UiFont, BorderStyle = BorderStyle.FixedSingle
         };
         _sftpPath.KeyDown += (_, e) => { if (e.KeyCode == Keys.Enter && _sftp?.IsConnected == true) SftpNavigate(_sftpPath.Text); };
@@ -245,8 +245,8 @@ public sealed class ConnectionSidebar : UserControl
             BackColor = Theme.SidebarBack, ForeColor = Theme.Text, Font = Theme.UiFont,
             BorderStyle = BorderStyle.None, HeaderStyle = ColumnHeaderStyle.Nonclickable
         };
-        _sftpList.Columns.Add("Name", 150);
-        _sftpList.Columns.Add("Size", 60, HorizontalAlignment.Right);
+        _sftpList.Columns.Add("Name", this.Dpi(150));
+        _sftpList.Columns.Add("Size", this.Dpi(60), HorizontalAlignment.Right);
         _sftpList.DoubleClick += (_, _) =>
         {
             if (_sftpList.SelectedItems.Count == 0 || _sftp?.IsConnected != true) return;
@@ -651,8 +651,8 @@ public sealed class ConnectionSidebar : UserControl
         var b = new Button
         {
             Text = glyph,
-            Width = 34,
-            Height = 34,
+            Width = this.Dpi(34),
+            Height = this.Dpi(34),
             FlatStyle = FlatStyle.Flat,
             ForeColor = Theme.TextDim,
             BackColor = Theme.SidebarBack,

src/ETTerms/App/Dialogs/ConnectionEditDialog.cs

@@ -59,6 +59,7 @@ public sealed class ConnectionEditDialog : DarkDialog
 
         _type.SelectedIndex = (existing?.Type ?? ConnectionType.Ssh) == ConnectionType.Ssh ? 0 : 1;
         ToggleType();
+        ApplyDpiScale();
     }
 
     private void ToggleType()

src/ETTerms/App/Dialogs/DarkDialog.cs

@@ -12,6 +12,7 @@ public abstract class DarkDialog : Form
         BackColor = Theme.SidebarBack;
         ForeColor = Theme.Text;
         Font = Theme.UiFont;
+        AutoScaleMode = AutoScaleMode.None;   // 縮放由 ApplyDpiScale() 統一處理，避免雙重縮放
         FormBorderStyle = FormBorderStyle.FixedDialog;
         StartPosition = FormStartPosition.CenterParent;
         MaximizeBox = false;
@@ -19,6 +20,17 @@ public abstract class DarkDialog : Form
         ShowInTaskbar = false;
     }
 
+    /// <summary>
+    /// 依目前 DPI 一次縮放整個對話框（含所有子控制項的絕對座標），
+    /// 於衍生類別建構子「最後」呼叫。對話框以 96-DPI 座標排版，
+    /// 字型是點數會自己隨 DPI 放大，座標不縮放在 125%/150% 就會裁切、疊字。
+    /// </summary>
+    protected void ApplyDpiScale()
+    {
+        float f = DeviceDpi / 96f;
+        if (Math.Abs(f - 1f) > 0.01f) Scale(new SizeF(f, f));
+    }
+
     protected override void OnHandleCreated(EventArgs e)
     {
         base.OnHandleCreated(e);

src/ETTerms/App/Dialogs/TextPromptDialog.cs

@@ -30,6 +30,7 @@ public sealed class TextPromptDialog : DarkDialog
         Controls.AddRange(new Control[] { lbl, _input, ok, cancel });
         AcceptButton = ok;
         CancelButton = cancel;
+        ApplyDpiScale();
     }
 
     /// <summary>顯示對話框；回傳輸入值，取消或空白回傳 null。</summary>

src/ETTerms/App/MainForm.Designer.cs

@@ -18,12 +18,13 @@ partial class MainForm
     {
         SuspendLayout();
 
-        // 用 Dpi 自動縮放：尺寸縮放比例 = 螢幕 DPI 比例，與點數字型的實際渲染比例一致，
-        // 避免「字放大了、容器沒放大」造成的高 DPI 文字/按鈕被裁切。
-        AutoScaleDimensions = new SizeF(96F, 96F);
-        AutoScaleMode = AutoScaleMode.Dpi;
-        ClientSize = new Size(1100, 700);
-        MinimumSize = new Size(720, 480);
+        // DPI 縮放由我們自己管（Theme.Dpi() + AutoSize），不靠 Form 的自動縮放：
+        // AutoScaleMode.Dpi 只在 Form 初始化當下對「已存在」的控制項做一次，
+        // 執行期才建立的 SessionPage / 各 view 完全吃不到（實測 125%/150% 皆未縮放），
+        // 留著反而有「哪天開始生效 → 與 Dpi() 雙重縮放」的風險。
+        AutoScaleMode = AutoScaleMode.None;
+        ClientSize = new Size(this.Dpi(1100), this.Dpi(700));
+        MinimumSize = new Size(this.Dpi(720), this.Dpi(480));
         BackColor = Theme.WorkspaceBack;
         ForeColor = Theme.Text;
         Font = Theme.UiFont;

src/ETTerms/App/SettingsView.cs

@@ -16,7 +16,7 @@ public sealed class SettingsView : UserControl
         // Use a custom tab strip + panel swapping instead of TabControl to avoid white borders
         var tabBar = new FlowLayoutPanel
         {
-            Dock = DockStyle.Top, Height = 32, BackColor = Theme.RailBack,
+            Dock = DockStyle.Top, Height = this.Dpi(32), BackColor = Theme.RailBack,
             Padding = new Padding(4, 4, 4, 0), WrapContents = false
         };
 
@@ -34,7 +34,7 @@ public sealed class SettingsView : UserControl
             var b = new Button
             {
                 Text = text, AutoSize = true, AutoSizeMode = AutoSizeMode.GrowAndShrink,
-                MinimumSize = new Size(70, 26), Padding = new Padding(10, 2, 10, 2),
+                MinimumSize = new Size(this.Dpi(70), this.Dpi(26)), Padding = new Padding(10, 2, 10, 2),
                 FlatStyle = FlatStyle.Flat,
                 ForeColor = Theme.Text, BackColor = Theme.TabBack, Font = Theme.UiFont,
                 Margin = new Padding(0, 0, 4, 0), Cursor = Cursors.Hand
@@ -76,18 +76,18 @@ public sealed class SettingsView : UserControl
             WrapContents = false, BackColor = Theme.WorkspaceBack, AutoScroll = true
         };
 
-        var font = new ComboBox { Width = 200, DropDownStyle = ComboBoxStyle.DropDown, BackColor = Theme.TabBack, ForeColor = Theme.Text, FlatStyle = FlatStyle.Flat };
+        var font = new ComboBox { Width = this.Dpi(200), DropDownStyle = ComboBoxStyle.DropDown, BackColor = Theme.TabBack, ForeColor = Theme.Text, FlatStyle = FlatStyle.Flat };
         font.Items.AddRange(new object[] { "Cascadia Mono", "Consolas", "Courier New", "Lucida Console", "JetBrains Mono" });
         font.Text = s.FontFamily;
 
-        var fontSize = new NumericUpDown { Width = 80, Minimum = 8, Maximum = 24, DecimalPlaces = 1, Increment = 0.5m, Value = (decimal)s.FontSize, BackColor = Theme.TabBack, ForeColor = Theme.Text, BorderStyle = BorderStyle.FixedSingle };
-        var scrollback = new NumericUpDown { Width = 100, Minimum = 500, Maximum = 50000, Increment = 500, Value = s.ScrollbackLines, BackColor = Theme.TabBack, ForeColor = Theme.Text, BorderStyle = BorderStyle.FixedSingle };
+        var fontSize = new NumericUpDown { Width = this.Dpi(80), Minimum = 8, Maximum = 24, DecimalPlaces = 1, Increment = 0.5m, Value = (decimal)s.FontSize, BackColor = Theme.TabBack, ForeColor = Theme.Text, BorderStyle = BorderStyle.FixedSingle };
+        var scrollback = new NumericUpDown { Width = this.Dpi(100), Minimum = 500, Maximum = 50000, Increment = 500, Value = s.ScrollbackLines, BackColor = Theme.TabBack, ForeColor = Theme.Text, BorderStyle = BorderStyle.FixedSingle };
 
-        var scheme = new ComboBox { Width = 150, DropDownStyle = ComboBoxStyle.DropDownList, BackColor = Theme.TabBack, ForeColor = Theme.Text, FlatStyle = FlatStyle.Flat };
+        var scheme = new ComboBox { Width = this.Dpi(150), DropDownStyle = ComboBoxStyle.DropDownList, BackColor = Theme.TabBack, ForeColor = Theme.Text, FlatStyle = FlatStyle.Flat };
         scheme.Items.AddRange(new object[] { "Dark", "Solarized Dark", "Monokai" });
         scheme.Text = s.ColorScheme;
 
-        var newline = new ComboBox { Width = 120, DropDownStyle = ComboBoxStyle.DropDownList, BackColor = Theme.TabBack, ForeColor = Theme.Text, FlatStyle = FlatStyle.Flat };
+        var newline = new ComboBox { Width = this.Dpi(120), DropDownStyle = ComboBoxStyle.DropDownList, BackColor = Theme.TabBack, ForeColor = Theme.Text, FlatStyle = FlatStyle.Flat };
         newline.Items.AddRange(new object[] { "\\r\\n", "\\r", "\\n" });
         newline.Text = s.DefaultNewLine;
 
@@ -109,17 +109,17 @@ public sealed class SettingsView : UserControl
         // Shell settings
         flow.Controls.Add(new Label { Text = "Shell Settings", AutoSize = true, ForeColor = Theme.Accent, Font = Theme.UiFontBold, Margin = new Padding(0, 0, 0, 4) });
 
-        var shellType = new ComboBox { Width = 150, DropDownStyle = ComboBoxStyle.DropDownList, BackColor = Theme.TabBack, ForeColor = Theme.Text, FlatStyle = FlatStyle.Flat };
+        var shellType = new ComboBox { Width = this.Dpi(150), DropDownStyle = ComboBoxStyle.DropDownList, BackColor = Theme.TabBack, ForeColor = Theme.Text, FlatStyle = FlatStyle.Flat };
         shellType.Items.AddRange(new object[] { "PowerShell", "Bash", "Cmd" });
         shellType.Text = s.ShellType;
         flow.Controls.Add(MakeRow("Terminal Shell", shellType));
 
         // 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 dirPanel = new Panel { Width = this.Dpi(InputWidth), Height = this.Dpi(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 = 26, FlatStyle = FlatStyle.Flat,
+            Text = "…", Width = this.Dpi(26), FlatStyle = FlatStyle.Flat,
             ForeColor = Theme.TextDim, BackColor = Theme.TabBack, Font = Theme.UiFont, Cursor = Cursors.Hand
         };
         // 無邊框、暗色文字、與輸入框同底色 → 不再突兀
@@ -143,7 +143,7 @@ public sealed class SettingsView : UserControl
         flow.Controls.Add(MakeSpacer(12));
 
         // ── Live Preview ──
-        var preview = new Panel { Width = 460, Height = 100, BackColor = Color.FromArgb(20, 20, 24), Margin = new Padding(0, 0, 0, 8) };
+        var preview = new Panel { Width = this.Dpi(460), Height = this.Dpi(100), BackColor = Color.FromArgb(20, 20, 24), Margin = new Padding(0, 0, 0, 8) };
         var previewLabel = new Label
         {
             Dock = DockStyle.Fill, BackColor = Color.FromArgb(20, 20, 24), ForeColor = Color.FromArgb(200, 200, 200),
@@ -204,7 +204,7 @@ public sealed class SettingsView : UserControl
         {
             Text = "Keywords below are highlighted in red in every terminal (case-insensitive).\n" +
                    "When a keyword appears in a background tab, that tab's dot turns red until you open it.",
-            AutoSize = false, Width = 520, Height = 34,
+            AutoSize = true,
             ForeColor = Theme.TextDim, Font = Theme.UiFont, Margin = new Padding(0, 0, 0, 8)
         });
 
@@ -218,7 +218,7 @@ public sealed class SettingsView : UserControl
         // 規則清單：每列 = 啟用勾選 + 關鍵字（可直接編輯）
         var grid = new DataGridView
         {
-            Width = 420, Height = 240,
+            Width = this.Dpi(420), Height = this.Dpi(240),
             BackgroundColor = Theme.WorkspaceBack, ForeColor = Theme.Text, GridColor = Theme.Border,
             BorderStyle = BorderStyle.None, CellBorderStyle = DataGridViewCellBorderStyle.SingleHorizontal,
             DefaultCellStyle = { BackColor = Theme.TabBack, ForeColor = Theme.Text, SelectionBackColor = Theme.Hover, SelectionForeColor = Theme.Text },
@@ -227,9 +227,9 @@ public sealed class SettingsView : UserControl
             EnableHeadersVisualStyles = false, RowHeadersVisible = false,
             AllowUserToAddRows = false, AllowUserToDeleteRows = false,
             AllowUserToResizeRows = false, SelectionMode = DataGridViewSelectionMode.FullRowSelect,
-            Font = Theme.UiFont, RowTemplate = { Height = 24 }, Margin = new Padding(0, 0, 0, 8)
+            Font = Theme.UiFont, RowTemplate = { Height = this.Dpi(24) }, Margin = new Padding(0, 0, 0, 8)
         };
-        grid.Columns.Add(new DataGridViewCheckBoxColumn { Name = "On", HeaderText = "On", Width = 44 });
+        grid.Columns.Add(new DataGridViewCheckBoxColumn { Name = "On", HeaderText = "On", Width = this.Dpi(44) });
         grid.Columns.Add(new DataGridViewTextBoxColumn
         {
             Name = "Keyword", HeaderText = "Keyword",
@@ -239,7 +239,7 @@ public sealed class SettingsView : UserControl
         flow.Controls.Add(grid);
 
         // 新增 / 移除
-        var newKw = new TextBox { Width = 220, BackColor = Theme.TabBack, ForeColor = Theme.Text, Font = Theme.UiFont, BorderStyle = BorderStyle.FixedSingle };
+        var newKw = new TextBox { Width = this.Dpi(220), BackColor = Theme.TabBack, ForeColor = Theme.Text, Font = Theme.UiFont, BorderStyle = BorderStyle.FixedSingle };
         var addBtn = MakeButton("Add", Theme.Accent);
         var removeBtn = MakeButton("Remove Selected", Color.FromArgb(210, 120, 120));
 
@@ -315,33 +315,33 @@ public sealed class SettingsView : UserControl
                    "Leave blank to keep the AI Assistant disabled. Pick the model from the dropdown inside the\n" +
                    "AI Chat pane (it lists what your endpoint offers). The model must support function calling.\n" +
                    "The API key is stored in Windows Credential Manager, never in settings.json or the app.",
-            AutoSize = false, Width = 620, Height = 68,
+            AutoSize = true,
             ForeColor = Theme.TextDim, Font = Theme.UiFont, Margin = new Padding(0, 0, 0, 10)
         });
 
         var baseUrl = new TextBox
         {
-            Width = 380, BackColor = Theme.TabBack, ForeColor = Theme.Text, Font = Theme.UiFont,
+            Width = this.Dpi(380), BackColor = Theme.TabBack, ForeColor = Theme.Text, Font = Theme.UiFont,
             BorderStyle = BorderStyle.FixedSingle, Text = s.AiBaseUrl,
             PlaceholderText = "http://localhost:11434/v1"
         };
         var apiKey = new TextBox
         {
-            Width = 380, BackColor = Theme.TabBack, ForeColor = Theme.Text, Font = Theme.UiFont,
+            Width = this.Dpi(380), BackColor = Theme.TabBack, ForeColor = Theme.Text, Font = Theme.UiFont,
             BorderStyle = BorderStyle.FixedSingle, UseSystemPasswordChar = true,
             Text = CredentialVault.Get("ETTerms/AiApiKey") ?? "",
             PlaceholderText = "(stored in Credential Manager)"
         };
         var sysPrompt = new TextBox
         {
-            Width = 560, Height = 70, Multiline = true, BackColor = Theme.TabBack, ForeColor = Theme.Text,
+            Width = this.Dpi(560), Height = this.Dpi(70), Multiline = true, BackColor = Theme.TabBack, ForeColor = Theme.Text,
             Font = Theme.UiFont, BorderStyle = BorderStyle.FixedSingle, Text = s.AiSystemPrompt,
             PlaceholderText = "(optional) override the assistant persona / system prompt"
         };
 
         var maxRounds = new NumericUpDown
         {
-            Width = 100, Minimum = 0, Maximum = 100000, Increment = 10, Value = s.AiMaxToolRounds,
+            Width = this.Dpi(100), Minimum = 0, Maximum = 100000, Increment = 10, Value = s.AiMaxToolRounds,
             BackColor = Theme.TabBack, ForeColor = Theme.Text, BorderStyle = BorderStyle.FixedSingle
         };
 
@@ -352,7 +352,7 @@ public sealed class SettingsView : UserControl
         {
             Text = "How many tool calls the assistant may chain per message before it stops (a runaway-loop guard).\n" +
                    "0 = unlimited — for long automation runs. Every round costs tokens; press Stop in the chat to abort.",
-            AutoSize = false, Width = 620, Height = 34,
+            AutoSize = true,
             ForeColor = Theme.TextDim, Font = Theme.UiFont, Margin = new Padding(0, 0, 0, 6)
         });
         flow.Controls.Add(MakeSpacer(4));
@@ -368,7 +368,7 @@ public sealed class SettingsView : UserControl
         {
             Text = "Tools the assistant can call: serial send/read (via the GUI's open Serial session, shown as [AI]),\n" +
                    "and PDU control over SNMP. Turning an outlet off / power-cycling always asks you to confirm.",
-            AutoSize = false, Width = 620, Height = 36,
+            AutoSize = true,
             ForeColor = Theme.TextDim, Font = Theme.UiFont, Margin = new Padding(0, 0, 0, 8)
         });
 
@@ -416,7 +416,7 @@ public sealed class SettingsView : UserControl
                    "user-level config. Serial: ETTerms owns the COM port, the AI drives it through a\n" +
                    "local named pipe (open a Serial session first). PDU: the AI controls outlets\n" +
                    "directly over SNMP — no GUI session required.",
-            AutoSize = false, Width = 600, Height = 64,
+            AutoSize = true,
             ForeColor = Theme.TextDim, Font = Theme.UiFont, Margin = new Padding(0, 0, 0, 8)
         });
 
@@ -426,7 +426,7 @@ public sealed class SettingsView : UserControl
             flow.Controls.Add(new Label
             {
                 Text = $"{name}:  {exe}",
-                AutoSize = false, Width = 600, Height = 20,
+                AutoSize = true,
                 ForeColor = exists ? Theme.SerialColor : Color.FromArgb(210, 150, 120),
                 Font = Theme.UiFont, Margin = new Padding(0, 0, 0, 2)
             });
@@ -436,7 +436,7 @@ public sealed class SettingsView : UserControl
             flow.Controls.Add(new Label
             {
                 Text = "⚠ Some servers not built yet — publish the app (or build the MCP projects). Setup still writes the expected paths.",
-                AutoSize = false, Width = 600, Height = 20,
+                AutoSize = true,
                 ForeColor = Color.FromArgb(210, 150, 120), Font = Theme.UiFont, Margin = new Padding(0, 0, 0, 4)
             });
         }
@@ -455,7 +455,7 @@ public sealed class SettingsView : UserControl
     {
         var card = new Panel
         {
-            Width = 600, Height = 196, BackColor = Theme.TabBack,
+            Width = this.Dpi(600), Height = this.Dpi(196), BackColor = Theme.TabBack,
             Padding = new Padding(14), Margin = new Padding(0, 0, 0, 4)
         };
         var col = new FlowLayoutPanel
@@ -473,7 +473,7 @@ public sealed class SettingsView : UserControl
         var pathLbl = new Label
         {
             Text = $"Config:  {McpRegistrar.ConfigPath(target)}",
-            AutoSize = false, Width = 560, Height = 18,
+            AutoSize = true,
             ForeColor = Theme.TextDim, Font = Theme.UiFont, Margin = new Padding(0, 0, 0, 6)
         };
 
@@ -495,7 +495,7 @@ public sealed class SettingsView : UserControl
         };
         var verifyBox = new TextBox
         {
-            Multiline = true, ReadOnly = true, Width = 560, Height = 56,
+            Multiline = true, ReadOnly = true, Width = this.Dpi(560), Height = this.Dpi(56),
             BackColor = Color.FromArgb(20, 20, 24), ForeColor = Color.FromArgb(200, 200, 200),
             BorderStyle = BorderStyle.FixedSingle, Font = new Font("Cascadia Mono", 9f),
             Text = McpRegistrar.VerifyHint(target)
@@ -571,11 +571,11 @@ public sealed class SettingsView : UserControl
         };
         var lbl = new Label
         {
-            Text = label, AutoSize = true, MinimumSize = new Size(LabelWidth, 0),
+            Text = label, AutoSize = true, MinimumSize = new Size(row.Dpi(LabelWidth), 0),
             ForeColor = Theme.Text, Font = Theme.UiFont,
             TextAlign = ContentAlignment.MiddleLeft, Margin = new Padding(0, 6, 8, 0)
         };
-        if (control.Width <= 0) control.Width = InputWidth;
+        if (control.Width <= 0) control.Width = row.Dpi(InputWidth);
         row.Controls.Add(lbl);
         row.Controls.Add(control);
         return row;
@@ -586,11 +586,12 @@ public sealed class SettingsView : UserControl
         var b = new Button
         {
             Text = text, AutoSize = true, AutoSizeMode = AutoSizeMode.GrowAndShrink,
-            MinimumSize = new Size(90, 28), Padding = new Padding(10, 2, 10, 2),
+            Padding = new Padding(10, 2, 10, 2),
             FlatStyle = FlatStyle.Flat,
             ForeColor = Theme.Text, BackColor = Theme.TabBack, Font = Theme.UiFont,
             Cursor = Cursors.Hand, Margin = new Padding(8, 0, 0, 0)
         };
+        b.MinimumSize = new Size(b.Dpi(90), b.Dpi(28));
         b.FlatAppearance.BorderColor = borderColor;
         b.FlatAppearance.MouseOverBackColor = Theme.Hover;
         return b;

src/ETTerms/App/StatusView.cs

@@ -19,7 +19,7 @@ public sealed class StatusView : UserControl
 
         var tabBar = new FlowLayoutPanel
         {
-            Dock = DockStyle.Top, Height = 32, BackColor = Theme.RailBack,
+            Dock = DockStyle.Top, Height = this.Dpi(32), BackColor = Theme.RailBack,
             Padding = new Padding(4, 4, 4, 0), WrapContents = false
         };
 
@@ -37,7 +37,7 @@ public sealed class StatusView : UserControl
             var b = new Button
             {
                 Text = text, AutoSize = true, AutoSizeMode = AutoSizeMode.GrowAndShrink,
-                MinimumSize = new Size(70, 26), Padding = new Padding(10, 2, 10, 2),
+                MinimumSize = new Size(this.Dpi(70), this.Dpi(26)), Padding = new Padding(10, 2, 10, 2),
                 FlatStyle = FlatStyle.Flat,
                 ForeColor = Theme.Text, BackColor = Theme.TabBack, Font = Theme.UiFont,
                 Margin = new Padding(0, 0, 4, 0), Cursor = Cursors.Hand
@@ -75,11 +75,11 @@ public sealed class StatusView : UserControl
         };
 
         // Connection row
-        var ipBox = new TextBox { Width = 160, Text = "192.168.1.21", BackColor = Theme.TabBack, ForeColor = Theme.Text, Font = Theme.UiFont };
+        var ipBox = new TextBox { Width = this.Dpi(160), Text = "192.168.1.21", BackColor = Theme.TabBack, ForeColor = Theme.Text, Font = Theme.UiFont };
         var connectBtn = MakeButton("Connect", Theme.SerialColor);
         var statusLabel = new Label { AutoSize = true, Text = "Disconnected", ForeColor = Theme.TextDim, Font = Theme.UiFont, Margin = new Padding(8, 8, 0, 0) };
 
-        var connRow = new FlowLayoutPanel { FlowDirection = FlowDirection.LeftToRight, Width = 500, Height = 36, WrapContents = false, Margin = new Padding(0, 0, 0, 8) };
+        var connRow = new FlowLayoutPanel { FlowDirection = FlowDirection.LeftToRight, AutoSize = true, WrapContents = false, Margin = new Padding(0, 0, 0, 8) };
         connRow.Controls.Add(new Label { Text = "PDU IP:", AutoSize = true, ForeColor = Theme.Text, Font = Theme.UiFont, Margin = new Padding(0, 6, 8, 0) });
         connRow.Controls.Add(ipBox);
         connRow.Controls.Add(connectBtn);
@@ -89,7 +89,7 @@ public sealed class StatusView : UserControl
         // Port status grid
         var grid = new DataGridView
         {
-            Width = 480, Height = 310, AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill,
+            Width = this.Dpi(480), Height = this.Dpi(310), AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill,
             BackgroundColor = Theme.WorkspaceBack, ForeColor = Theme.Text, GridColor = Theme.Border,
             BorderStyle = BorderStyle.None, CellBorderStyle = DataGridViewCellBorderStyle.SingleHorizontal,
             DefaultCellStyle = { BackColor = Theme.TabBack, ForeColor = Theme.Text, SelectionBackColor = Theme.Hover, SelectionForeColor = Theme.Text },
@@ -99,7 +99,7 @@ public sealed class StatusView : UserControl
             AllowUserToAddRows = false, AllowUserToDeleteRows = false, ReadOnly = true,
             AllowUserToResizeRows = false, SelectionMode = DataGridViewSelectionMode.FullRowSelect,
             ScrollBars = ScrollBars.None, Font = Theme.UiFont,
-            RowTemplate = { Height = 24 },
+            RowTemplate = { Height = this.Dpi(24) },
             Margin = new Padding(0, 8, 0, 8)
         };
         grid.Columns.Add("Port", "Port");
@@ -274,11 +274,12 @@ public sealed class StatusView : UserControl
         var b = new Button
         {
             Text = text, AutoSize = true, AutoSizeMode = AutoSizeMode.GrowAndShrink,
-            MinimumSize = new Size(90, 28), Padding = new Padding(10, 2, 10, 2),
+            Padding = new Padding(10, 2, 10, 2),
             FlatStyle = FlatStyle.Flat,
             ForeColor = Theme.Text, BackColor = Theme.TabBack, Font = Theme.UiFont,
             Cursor = Cursors.Hand, Margin = new Padding(8, 0, 0, 0)
         };
+        b.MinimumSize = new Size(b.Dpi(90), b.Dpi(28));
         b.FlatAppearance.BorderColor = borderColor;
         b.FlatAppearance.MouseOverBackColor = Theme.Hover;
         return b;

src/ETTerms/App/Theme.cs

@@ -1,4 +1,5 @@
 using System.Drawing;
+using System.Windows.Forms;
 
 namespace ETTerms.App;
 
@@ -27,4 +28,12 @@ public static class Theme
 
     public static readonly Font  UiFont        = new("Segoe UI", 9.5f);
     public static readonly Font  UiFontBold    = new("Segoe UI", 9.5f, FontStyle.Bold);
+
+    /// <summary>
+    /// 96-DPI 設計像素 → 控制項目前 DPI 的實際像素。
+    /// 執行期建立的控制項不會被 Form 的自動縮放處理（那只發生在 Form 初始化當下），
+    /// 字型以點數指定會自己隨 DPI 放大，因此所有寫死的像素尺寸都必須經過這裡換算，
+    /// 否則 125%/150% 時就是「字大了、框沒大」的裁切（作法同 ActivityRail.ItemSize）。
+    /// </summary>
+    public static int Dpi(this Control c, int px) => (int)Math.Round(px * (c.DeviceDpi / 96.0));
 }

src/ETTerms/App/Workspace/WorkspaceView.cs

@@ -44,9 +44,10 @@ public sealed class WorkspaceView : UserControl
     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;
+    // Tab 列尺寸：owner-draw 不會被自動縮放，需依 DPI 換算（同 ActivityRail.ItemSize）
+    private int StripH => this.Dpi(30);
+    private int TabW => this.Dpi(180);
+    private int CloseSz => this.Dpi(14);
 
     private static readonly (string label, int r, int c)[] Presets =
     { ("1×1", 1, 1), ("1×2", 1, 2), ("2×1", 2, 1), ("2×2", 2, 2), ("2×3", 2, 3), ("3×3", 3, 3) };
@@ -58,7 +59,7 @@ public sealed class WorkspaceView : UserControl
 
         // 頂部工具列容器：左側為 Layout/Run 群組（Fill），右側為 Log All（Dock Right）
         // 高度 40 與左側 ConnectionSidebar 的 tab bar 對齊，且容得下 AutoSize 按鈕（不被裁切）
-        var topBar = new Panel { Dock = DockStyle.Top, Height = 40, BackColor = Theme.RailBack };
+        var topBar = new Panel { Dock = DockStyle.Top, Height = this.Dpi(40), BackColor = Theme.RailBack };
 
         _toolbar = new FlowLayoutPanel
         {
@@ -268,7 +269,7 @@ public sealed class WorkspaceView : UserControl
                 : $"{icon}  {s.Title}  [{glabel}]";
             var lbl = new Label
             {
-                Dock = DockStyle.Bottom, Height = 22,
+                Dock = DockStyle.Bottom, Height = this.Dpi(22),
                 Text = labelText,
                 ForeColor = s == _active ? Theme.Text : Theme.TextDim,
                 BackColor = Theme.RailBack, Font = Theme.UiFont,
@@ -293,7 +294,7 @@ public sealed class WorkspaceView : UserControl
         foreach (var s in _sessions)
         {
             s.TabBounds = new Rectangle(x, 0, TabW, StripH);
-            s.CloseRect = new Rectangle(s.TabBounds.Right - CloseSz - 6, (StripH - CloseSz) / 2, CloseSz, CloseSz);
+            s.CloseRect = new Rectangle(s.TabBounds.Right - CloseSz - this.Dpi(6), (StripH - CloseSz) / 2, CloseSz, CloseSz);
             x += TabW;
         }
     }
@@ -400,9 +401,11 @@ public sealed class WorkspaceView : UserControl
             // 警示中的背景分頁：型別圓點改紅色，切過去看時清除。AI 分頁用 accent 紫。
             Color dotColor = s.Alert ? Color.FromArgb(235, 85, 85)
                 : s.IsAi ? Theme.Accent : s.IsSsh ? Theme.SshColor : Theme.SerialColor;
+            int dotSz = this.Dpi(8);
             using (var dot = new SolidBrush(dotColor))
-                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);
+                g.FillEllipse(dot, s.TabBounds.Left + this.Dpi(9), (StripH - dotSz) / 2, dotSz, dotSz);
+            int textL = this.Dpi(22);
+            var tr = new Rectangle(s.TabBounds.Left + textL, s.TabBounds.Top, s.TabBounds.Width - textL - CloseSz - this.Dpi(10), StripH);
             TextRenderer.DrawText(g, s.Title, Theme.UiFont, tr, active ? Theme.Text : Theme.TextDim,
                 TextFormatFlags.Left | TextFormatFlags.VerticalCenter | TextFormatFlags.EndEllipsis);
             TextRenderer.DrawText(g, "✕", Theme.UiFont, s.CloseRect, hover ? Theme.Text : Theme.TextDim,
@@ -416,7 +419,7 @@ public sealed class WorkspaceView : UserControl
         var b = new Button
         {
             Text = label, AutoSize = true, AutoSizeMode = AutoSizeMode.GrowAndShrink,
-            MinimumSize = new Size(40, 26), Padding = new Padding(8, 2, 8, 2),
+            MinimumSize = new Size(this.Dpi(40), this.Dpi(26)), Padding = new Padding(8, 2, 8, 2),
             FlatStyle = FlatStyle.Flat,
             ForeColor = Theme.Text, BackColor = Theme.TabBack, Font = Theme.UiFont,
             Margin = new Padding(3, 0, 3, 0), Cursor = Cursors.Hand
@@ -427,12 +430,12 @@ public sealed class WorkspaceView : UserControl
         return b;
     }
 
-    private static Button MakeActionButton(string text, int minWidth, int leftMargin, EventHandler onClick)
+    private Button MakeActionButton(string text, int minWidth, int leftMargin, EventHandler onClick)
     {
         var b = new Button
         {
             Text = text, AutoSize = true, AutoSizeMode = AutoSizeMode.GrowAndShrink,
-            MinimumSize = new Size(minWidth, 26), Padding = new Padding(10, 2, 10, 2),
+            MinimumSize = new Size(this.Dpi(minWidth), this.Dpi(26)), Padding = new Padding(10, 2, 10, 2),
             FlatStyle = FlatStyle.Flat,
             ForeColor = Theme.Text, BackColor = Theme.TabBack, Font = Theme.UiFont,
             Margin = new Padding(leftMargin, 0, 3, 0), Cursor = Cursors.Hand
@@ -474,8 +477,7 @@ public sealed class WorkspaceView : UserControl
 
     private void SetLogAllActive(bool on)
     {
-        _logAll.Text = on ? "⏺ Logging All" : "⏺ Log All";
-        _logAll.Width = on ? 110 : 96;
+        _logAll.Text = on ? "⏺ Logging All" : "⏺ Log All";   // AutoSize 按鈕，寬度隨字自動調
         _logAll.ForeColor = on ? Theme.SerialColor : Theme.Text;
     }
 

src/ETTerms/ETTerms.csproj

@@ -10,7 +10,7 @@
     <AssemblyName>ETTerms</AssemblyName>
 
     <!-- 版本資訊 -->
-    <Version>0.7.1</Version>
+    <Version>0.7.2</Version>
     <Product>ETTerms</Product>
     <Company>ETTerms Project</Company>
 

src/ETTerms/Sessions/SessionPage.cs

@@ -73,7 +73,7 @@ public sealed class SessionPage : UserControl
         Dock = DockStyle.Fill;
 
         // ── 頂部腳本列 ──
-        var bar = new Panel { Dock = DockStyle.Top, Height = 24, BackColor = Theme.RailBack };
+        var bar = new Panel { Dock = DockStyle.Top, Height = this.Dpi(24), BackColor = Theme.RailBack };
         _status = new Label
         {
             Dock = DockStyle.Fill, Text = "Idle",
@@ -84,7 +84,7 @@ public sealed class SessionPage : UserControl
         _stop = MakeBarButton("■ Stop", (_, _) => _runner.Cancel());
         _stop.Enabled = false;
         _log = MakeBarButton("⏺ Log", OnToggleLog);
-        _log.Width = 92;            // 容納 "⏺ Logging" 不被截字
+        _log.Width = BarButtonWidth("⏺ Logging");   // 取切換後較長的字，不被截字
         bar.Controls.Add(_status);  // Fill 先加
         bar.Controls.Add(_log);     // Right（最左：Log）
         bar.Controls.Add(_run);     // Right（中：Script）
@@ -185,11 +185,15 @@ public sealed class SessionPage : UserControl
         else action();
     }
 
-    private static Button MakeBarButton(string text, EventHandler onClick)
+    /// <summary>依實際字寬（隨 DPI 放大）算按鈕寬度，固定像素在 125%/150% 會截字。</summary>
+    private int BarButtonWidth(string text) =>
+        TextRenderer.MeasureText(text, Theme.UiFont).Width + this.Dpi(18);
+
+    private Button MakeBarButton(string text, EventHandler onClick)
     {
         var b = new Button
         {
-            Text = text, Dock = DockStyle.Right, Width = 72, FlatStyle = FlatStyle.Flat,
+            Text = text, Dock = DockStyle.Right, Width = BarButtonWidth(text), FlatStyle = FlatStyle.Flat,
             ForeColor = Theme.Text, BackColor = Theme.TabBack, Font = Theme.UiFont, Cursor = Cursors.Hand
         };
         b.FlatAppearance.BorderColor = Theme.Border;

src/ETTerms/Terminal/DarkScrollBar.cs

@@ -1,6 +1,7 @@
 using System.Drawing;
 using System.Drawing.Drawing2D;
 using System.Windows.Forms;
+using ETTerms.App;
 
 namespace ETTerms.Terminal;
 
@@ -44,7 +45,7 @@ public sealed class DarkScrollBar : Control
         // 導致 TerminalView 收不到鍵盤輸入（打字 / Enter 全失效），需重開 session 才恢復。
         SetStyle(ControlStyles.Selectable, false);
         TabStop = false;
-        Width = 12;
+        Width = this.Dpi(12);
         BackColor = TrackColor;
     }
 

src/ETTerms/Terminal/TerminalView.cs

@@ -3,6 +3,7 @@ using System.Runtime.InteropServices;
 using System.Text;
 using System.Text.RegularExpressions;
 using System.Windows.Forms;
+using ETTerms.App;
 using ETTerms.Infrastructure;
 
 namespace ETTerms.Terminal;
@@ -440,7 +441,7 @@ public sealed class TerminalView : UserControl
         if (_searchPanel != null) return;
 
         var back = Color.FromArgb(32, 32, 38);
-        _searchPanel = new Panel { Size = new Size(268, 30), BackColor = back, Visible = false };
+        _searchPanel = new Panel { Size = new Size(this.Dpi(268), this.Dpi(30)), BackColor = back, Visible = false };
         _searchPanel.Paint += (_, pe) =>
         {
             using var pen = new Pen(Color.FromArgb(58, 58, 66));
@@ -449,7 +450,7 @@ public sealed class TerminalView : UserControl
 
         _searchBox = new TextBox
         {
-            Bounds = new Rectangle(6, 5, 130, 20), BorderStyle = BorderStyle.None,
+            Bounds = new Rectangle(this.Dpi(6), this.Dpi(5), this.Dpi(130), this.Dpi(20)), BorderStyle = BorderStyle.None,
             BackColor = back, ForeColor = Color.FromArgb(222, 222, 226), Font = new Font("Segoe UI", 9.5f)
         };
         _searchBox.TextChanged += (_, _) => RunSearch();
@@ -463,7 +464,7 @@ public sealed class TerminalView : UserControl
 
         _searchCount = new Label
         {
-            Bounds = new Rectangle(138, 7, 56, 16), Text = "",
+            Bounds = new Rectangle(this.Dpi(138), this.Dpi(7), this.Dpi(56), this.Dpi(16)), Text = "",
             ForeColor = Color.FromArgb(150, 150, 158), BackColor = back,
             Font = new Font("Segoe UI", 8.5f), TextAlign = ContentAlignment.MiddleRight
         };
@@ -472,7 +473,7 @@ public sealed class TerminalView : UserControl
         {
             var b = new Button
             {
-                Bounds = new Rectangle(x, 4, 22, 22), Text = text, FlatStyle = FlatStyle.Flat,
+                Bounds = new Rectangle(this.Dpi(x), this.Dpi(4), this.Dpi(22), this.Dpi(22)), Text = text, FlatStyle = FlatStyle.Flat,
                 ForeColor = Color.FromArgb(180, 180, 188), BackColor = back,
                 Font = new Font("Segoe UI", 8.5f), TabStop = false, Cursor = Cursors.Hand
             };
@@ -493,7 +494,7 @@ public sealed class TerminalView : UserControl
     private void PositionSearchPanel()
     {
         if (_searchPanel == null) return;
-        _searchPanel.Location = new Point(Math.Max(0, ContentWidth - _searchPanel.Width - 8), 6);
+        _searchPanel.Location = new Point(Math.Max(0, ContentWidth - _searchPanel.Width - this.Dpi(8)), this.Dpi(6));
     }
 
     /// <summary>重掃整個 buffer（scrollback + 畫面）建立命中清單，並跳到最靠近底部的命中。</summary>