merge: v0.4.0 performance & stability overhaul

docs: add release notes for v0.4.0
feat: v0.4.0 performance & stability overhaul
2026-07-02 11:23:05 +08:00 · 2026-07-02 11:22:52 +08:00 · 2026-07-02 09:17:19 +08:00 · 2026-06-16 16:29:36 +08:00 · 2026-06-16 16:24:46 +08:00 · 2026-06-16 16:24:37 +08:00
39 changed files with 1699 additions and 459 deletions
@@ -32,7 +32,7 @@ ETTerms 是一個給工程師 / 韌體 / 硬體驗證人員用的**單一視窗
 | 祕密儲存 | **Windows Credential Manager**（DPAPI / CredMan） | 連線密碼、SSH key passphrase，不落地明碼 |
 | PDU 控制（選用） | **SnmpSharpNet** | 沿用 MyTeraTerm PDU 控制（`pductrl` / `pduconnect`） |
 | 日誌 | 自製 **AppLogger**（從 MyTeraTerm 移植） | 檔案 + Debug 雙輸出 |
-| AI / MCP 整合（選用） | **stdio MCP server**（官方 C# SDK `ModelContextProtocol`） | 獨立行程，但不自己開 port——經本機 named pipe 橋接到 GUI 持有的 serial session，把收發暴露成 AI 可呼叫工具（Kiro CLI / Claude CLI），見 [AI / MCP Integration](#ai--mcp-integrationserial-mcp-server) |
+| AI / MCP 整合（選用） | **stdio MCP server**（官方 C# SDK `ModelContextProtocol`） | 兩個獨立 server：`ETTerms.SerialMcp`（不自己開 port，經本機 named pipe 橋接 GUI 持有的 serial session）與 `ETTerms.PduMcp`（直接打 SNMP 控制 PDU 插座，不需 GUI）；把收發 / 電源控制暴露成 AI 可呼叫工具（Kiro CLI / Claude CLI），見 [AI / MCP Integration](#ai--mcp-integrationserial-mcp--pdu-mcp-server) |
 | 打包 | `dotnet publish` + （選用）Inno Setup / MSIX | 單機安裝，current-user |

 > **與舊版 MyTeraTerm 的關鍵差異：** 舊版是把真正的 `ttermpro.exe`（TeraTerm）嵌進 Panel，靠 **com0com 虛擬 COM 對**攔截 serial 來跑腳本。ETTerms 改走**全原生**：SSH.NET 做 SSH、`System.IO.Ports` 做 serial、自繪 VT100 控制項做終端機畫面，**不再依賴外部 TeraTerm exe，也不再需要 com0com**。腳本引擎從「驅動 com0com bridge」改成「驅動原生 `ISessionChannel`」。
@@ -118,8 +118,11 @@ ETTerms/
        │   ├── MainForm.cs         #   主視窗：Rail + Sidebar + Workspace（含深色標題列 DWM）
        │   ├── MainForm.Designer.cs
        │   ├── Theme.cs            #   全域深色配色 (KKTerm 風格)
-        │   ├── ActivityRail.cs     #   左側圖示列 (Terminal/Scripts/Settings)
+        │   ├── ActivityRail.cs     #   左側圖示列 (Terminal/Status/Settings/About)
        │   ├── ConnectionSidebar.cs#   仿 KKTerm 可編輯資料夾樹（搜尋/CRUD/拖曳分類）
+        │   ├── StatusView.cs       #   Status 檢視：分頁式（PDU…），PDU 連線後每 3 秒背景輪詢插座狀態，並可用表格內 Control 鈕直接開關各 Port
+        │   ├── SettingsView.cs     #   Settings 檢視：分頁式（Terminal / AI MCP）
+        │   ├── AboutView.cs        #   About 檢視（版本 / 連結）
        │   ├── Dialogs/            #   ── 深色對話框 ──
        │   │   ├── DarkDialog.cs       #   對話框基底（深色 + DWM 標題列）
        │   │   ├── TextPromptDialog.cs #   單行輸入（資料夾命名 / 改名）
@@ -131,7 +134,8 @@ ETTerms/
        │
        ├── Terminal/               # ── 終端機渲染 ──
        │   ├── TerminalView.cs     #   自繪 VT100 控制項 (owner-drawn)
-        │   ├── AnsiParser.cs       #   ANSI/VT100 escape 解析狀態機
+        │   ├── DarkScrollBar.cs    #   自繪深色垂直捲軸 (細長/圓角滑塊, 配深色主題)
+        │   ├── AnsiParser.cs       #   ANSI/VT100 escape 解析狀態機 (含 DEC 2004 bracketed paste)
        │   ├── ScreenBuffer.cs     #   字格緩衝 (rows×cols, 屬性/顏色)
        │   └── TerminalInput.cs    #   鍵盤 → byte 序列 (含特殊鍵)
        │
@@ -139,7 +143,7 @@ ETTerms/
        │   ├── ISessionChannel.cs  #   Write(byte[]) + event DataReceived
        │   ├── SshChannel.cs       #   SSH.NET 實作 (ShellStream)
        │   ├── SerialChannel.cs    #   System.IO.Ports 實作
-        │   ├── ShellChannel.cs     #   Windows ConPTY 本機 Shell
+        │   ├── ShellChannel.cs     #   Windows ConPTY 本機 Shell（StartupDirectory 不存在時 fallback 使用者家目錄）
        │   ├── SessionPage.cs      #   一個分頁 = TerminalView + Channel + 狀態
        │   ├── SessionManager.cs   #   開 / 關 / 列舉所有 active session
        │   ├── SerialBridgeServer.cs# ✅ 本機 named pipe server：把 serial session 的讀寫橋接給 MCP（Phase 9）
@@ -295,6 +299,9 @@ ETTerms 是單視窗多分頁，沒有「路由」，以下以**功能面板**
 - 接收 channel bytes → `AnsiParser` → `ScreenBuffer` → 繪製
 - 鍵盤輸入 → `TerminalInput` → byte 序列 → channel
 - 支援：scrollback、選取 / 複製、貼上、字型 / 配色（從 `TerminalProfile`）
+- **捲動：** 滑鼠滾輪或右側自繪深色捲軸 `DarkScrollBar`（拖曳滑塊 / 點軌道翻頁）；`ContentWidth` 扣掉捲軸寬避免文字被蓋，捲軸範圍 / 位置在 `Feed` / 滾輪 / resize 時同步
+- **貼上：** 對方啟用 bracketed paste（DEC mode 2004，如 PSReadLine / Kiro CLI）時，整段以 `ESC[200~ … ESC[201~` 包夾送出，避免多行貼上被逐行 Enter 立即送出；未啟用則逐字送出
+- **複製：** 右鍵複製選取內容後自動清除反白（提示已複製）

 ### Script Editor / Runner（Scripts 檢視）
 - 載入 / 編輯 `.ttl` 腳本（語法沿用 MyTeraTerm）
@@ -356,7 +363,16 @@ ScriptRunner.RunAsync(scriptText, activeChannel)

 ---

-## AI / MCP Integration（Serial MCP Server）
+## AI / MCP Integration（Serial MCP + PDU MCP Server）
+
+ETTerms 提供**兩個獨立的 stdio MCP server**給 AI agent（Kiro CLI / Claude CLI）：
+
+- **`ETTerms.SerialMcp`** — 收發 serial。COM port 獨佔，故由 GUI 唯一持有、MCP 經本機 named pipe 橋接（見下方）。
+- **`ETTerms.PduMcp`** — 控制 SNMP PDU 電源插座。SNMP(UDP) 非獨佔，故 MCP **直接打 SNMP**，不需 GUI 在跑、也不經 pipe。
+
+兩者都能用 GUI **Settings → AI MCP** 一鍵 Setup（`McpRegistrar` 會同時註冊 `etterms-serial` 與 `etterms-pdu`）。
+
+### Serial MCP Server

 > 讓 **Kiro CLI / Claude CLI** 等 AI agent 收發 serial，**且使用者能在 ETTerms GUI 即時看到 AI 的每筆收發**。
 >
@@ -425,6 +441,33 @@ kiro-cli mcp add --name serial --command dotnet `

 或寫進 agent.json 的 `mcpServers`；Claude CLI 則用其對應的 `mcpServers` 設定。**使用前提：先在 ETTerms GUI 開好要操作的 serial 連線**，AI 才能 `serial_attach` 上去。註冊後即可對 AI 說「列出目前 serial session → 接上 COM3 → 送指令看回應」。

+### PDU MCP Server（v0.3.0）
+
+> 讓 AI agent 直接控制 SNMP PDU 的電源插座，**典型用途：測試中自動 power-cycle DUT**。
+
+**關鍵設計：直接打 SNMP，不經 GUI 橋接。** 與 serial 不同，PDU 走 SNMP（UDP）**非獨佔**——多個行程可同時對同一台 PDU 下命令。因此 `ETTerms.PduMcp` 不需要像 serial 那樣繞 GUI 的 named pipe，而是內含一份精簡版 `PduController`（OID 邏輯複製自 GUI 的 `Scripting/Pdu/PduController`，診斷改走 stderr 以免污染 stdio JSON-RPC）直接與 PDU 對話。**好處：GUI 不必開著，AI 也能控制 PDU；最少程式碼、最穩。**
+
+```
+Kiro/Claude CLI ── 啟動子行程 ETTerms.PduMcp（stdio / JSON-RPC）
+                        └─ SnmpSharpNet ──(SNMP/UDP 161)──► PDU（iPoMan II/III）
+```
+
+連線狀態（device IP → controller）以行程內單例 `PduRegistry` 保存，跨工具呼叫保留，直到 `pdu_disconnect` 或行程結束。
+
+**暴露的工具：**
+
+| 工具 | 參數 | 說明 |
+|------|------|------|
+| `pdu_connect` | ip | 以 SNMP 連線並驗證 PDU 回應，成功回傳 model name；控制前必須先呼叫 |
+| `pdu_list` | — | 列出本 session 已連線的 PDU（依 IP） |
+| `pdu_set_port` | ip, port, on | 將某插座開(on=true)/關(off=false) |
+| `pdu_get_port` | ip, port | 讀單一插座的狀態 / 電流(mA) / 功率(W) |
+| `pdu_status` | ip | 讀全部 12 個插座的狀態 / 電流 / 功率 |
+| `pdu_power_cycle` | ip, port, offSeconds? | 關 → 等 offSeconds → 開（重啟 DUT） |
+| `pdu_disconnect` | ip | 解除本 session 的 PDU 連線（不改變插座狀態） |
+
+> 所有工具回傳統一的 `{ "ok": bool, "result"/"error": ... }` JSON。SNMP community 目前沿用 GUI 版的 `"private"`。
+
 ---

 ## Key Constraints & Business Rules
@@ -504,32 +547,52 @@ dotnet publish src\ETTerms\ETTerms.csproj -c Release -r win-x64 --self-contained

 **內容結構：**
 ```
-ETTerms_v0.2.0\
-├── ETTerms v0.2.0.exe        # 主程式 apphost，改名為「ETTerms v{Version}.exe」
+ETTerms_v0.3.0\
+├── ETTerms v0.3.0.exe        # 主程式 apphost，改名為「ETTerms v{Version}.exe」
 ├── ETTerms.dll + 各相依 dll  # SSH.NET / SQLite / SnmpSharpNet / System.IO.Ports …
-└── ETTerms.SerialMcp\        # Serial MCP server，獨立發佈到子資料夾（相依 dll 與 GUI 隔離）
-    ├── ETTerms.SerialMcp.exe
-    └── ETTerms.SerialMcp.dll + 相依
+├── ETTerms.SerialMcp\        # Serial MCP server，獨立發佈到子資料夾（相依 dll 與 GUI 隔離）
+│   ├── ETTerms.SerialMcp.exe
+│   └── ETTerms.SerialMcp.dll + 相依
+└── ETTerms.PduMcp\           # PDU MCP server（v0.3.0），同樣獨立發佈到子資料夾
+    ├── ETTerms.PduMcp.exe
+    └── ETTerms.PduMcp.dll + 相依（含 SnmpSharpNet）
 ```

 **規則：**
-1. **GUI publish 會自動帶上 MCP**：`ETTerms.csproj` 有 `PublishSerialMcp` target（`AfterTargets="Publish"`），會把 `ETTerms.SerialMcp` 一併發佈到 `ETTerms_v{Version}\ETTerms.SerialMcp\` **子資料夾**（與 GUI 相依 dll 隔離）。因此**只要發佈 GUI 一個指令**即可，不必再單獨發 MCP。
-   - 對齊 `McpRegistrar.ResolveServerExe()`：它解析的 `<ETTerms.exe>\ETTerms.SerialMcp\ETTerms.SerialMcp.exe` 因此**必定存在**，AI MCP 一鍵設定寫進去的路徑才不會落空。
+1. **GUI publish 會自動帶上兩個 MCP server**：`ETTerms.csproj` 有 `PublishMcpServers` target（`AfterTargets="Publish"`），會把 `ETTerms.SerialMcp` 與 `ETTerms.PduMcp` 一併發佈到各自的 `<publish>\<server>\` **子資料夾**（與 GUI 相依 dll 隔離）。因此**只要發佈 GUI 一個指令**即可，不必再單獨發 MCP。
+   - 對齊 `McpRegistrar.ResolveServerExe()`：它解析的 `<ETTerms.exe>\<server>\<server>.exe` 因此**必定存在**，AI MCP 一鍵設定寫進去的路徑才不會落空。
+   - MCP 子發佈會**跟隨 GUI 的 `SelfContained` 設定**（target 內以 `$(SelfContained)` 傳入）：框架相依版的 MCP 也框架相依；portable 版的 MCP 也免 runtime。
 2. **主 exe 改名**：`dotnet publish` 產生的 `ETTerms.exe` 重新命名為 **`ETTerms v{Version}.exe`**。
   - 可安全改名：.NET apphost 內部記錄要載入的 `ETTerms.dll`，**不靠自身檔名**，改名後仍正常啟動。
-3. **框架相依**：`--self-contained false -r win-x64`（目標機需已裝 .NET 8 Desktop Runtime）。

-**PowerShell 範例：**
+### 兩種發佈版本（兩個都要產出）
+
+| 版本 | 資料夾 | 指令旗標 | 需 .NET Runtime？ | 用途 |
+|------|--------|----------|-------------------|------|
+| **A. 框架相依（預設）** | `ETTerms_v{Version}\` | `--self-contained false` | ✅ 需先裝 .NET 8 Desktop Runtime | 體積小；給已具備 runtime 的環境 |
+| **B. Portable（免安裝）** | `ETTerms_v{Version}_portable\` | `--self-contained true` | ❌ 不需要，runtime 已內含 | 體積大（約 240MB）；給受 MIS 管控、不便裝 runtime 的環境，解壓即用、免系統管理員權限 |
+
+> ⚠️ **不要開 trimming**（`PublishTrimmed`）：WinForms 大量用反射，trim 後易在執行時出錯。
+
+**PowerShell 範例（一次產出兩種）：**
 ```powershell
-$ver    = ([regex]::Match((Get-Content src\ETTerms\ETTerms.csproj -Raw), '<Version>([^<]+)</Version>')).Groups[1].Value
-$root   = "src\ETTerms\Publish\ETTerms_v$ver"
-if (Test-Path $root) { Remove-Item $root -Recurse -Force }
+$ver = ([regex]::Match((Get-Content src\ETTerms\ETTerms.csproj -Raw), '<Version>([^<]+)</Version>')).Groups[1].Value

-# 發佈 GUI；ETTerms.SerialMcp 由 PublishSerialMcp target 自動發到 $root\ETTerms.SerialMcp\
+# A. 框架相依版 → ETTerms_v{Version}\
+$root = "src\ETTerms\Publish\ETTerms_v$ver"
+if (Test-Path $root) { Remove-Item $root -Recurse -Force }
 dotnet publish src\ETTerms\ETTerms.csproj -c Release -r win-x64 --self-contained false -o $root
 Rename-Item (Join-Path $root "ETTerms.exe") "ETTerms v$ver.exe"
+
+# B. Portable 免安裝版 → ETTerms_v{Version}_portable\（runtime 已內含；MCP 也跟著 self-contained）
+$proot = "src\ETTerms\Publish\ETTerms_v${ver}_portable"
+if (Test-Path $proot) { Remove-Item $proot -Recurse -Force }
+dotnet publish src\ETTerms\ETTerms.csproj -c Release -r win-x64 --self-contained true -o $proot
+Rename-Item (Join-Path $proot "ETTerms.exe") "ETTerms v$ver.exe"
 ```

+> 兩版的 `ETTerms.SerialMcp\` 與 `ETTerms.PduMcp\` 子資料夾都由 `PublishMcpServers` target 自動產生；portable 版的 MCP 也是 self-contained，故 AI MCP 功能在無 runtime 環境同樣可用。
+
 ---

 ## Development Phases
@@ -10,7 +10,15 @@ 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）。打包待指示。

-**v0.2.1：** 新增 GUI **Settings → AI MCP** 分頁（`McpRegistrar`）：對 Claude Code（`~/.claude.json`）與 Kiro（`~/.kiro/settings/mcp.json`）**一鍵 Setup / Remove** 註冊 `etterms-serial` MCP server，read-modify-write 保留檔內其他設定、原子寫回；卡片附 CLI 驗證指令。`ETTerms.csproj` 加 `PublishSerialMcp` target（`AfterTargets=Publish`），GUI publish 會自動把 `ETTerms.SerialMcp` 帶到 `\ETTerms.SerialMcp\` 子資料夾，與 `McpRegistrar.ResolveServerExe()` 解析路徑對齊。
+**v0.4.0：** 效能 / 穩定性總整理（來自全 codebase 審視）。**(1) 終端機繪製熱路徑去配置** — `TerminalView` 快取 4 種 Font 變體（Bold/Underline 組合）與單一可變色 `SolidBrush`，run 合併時每 cell 顏色只解析一次，`Dispose` 收掉 GDI 資源；**(2) scrollback 改環形緩衝** — `ScreenBuffer` 從 `List+RemoveRange(0,…)`（滿了每行 O(n) 搬移）改 O(1) ring buffer；**(3) UTF-8 跨 chunk 亂碼修正（3 處）** — `TTLInterpreter.OnData`、`SerialBridgeServer` rx 轉發、`SessionLogger.Write` 改用 stateful `Decoder`（比照 `AnsiParser` 原本的正確做法）；**(4) PDU SNMP 批次查詢** — 新共用專案 **`src/ETTerms.PduCore/`** 取代 GUI 與 PduMcp 兩份複製的 `PduController`（log 走建構子委派），新增 `GetAllPortsStatus()` 一個 SNMP GET 帶 12 個 varbind，12 port 輪詢從 36 個 UDP 來回縮成 3 個（StatusView 與 `pdu_status` 都改用）；**(5) ShellChannel 資源修正** — `DeleteProcThreadAttributeList`+`FreeHGlobal` 釋放 attribute list、`CloseHandle(pi.hProcess)`，shell 自行 exit 時顯示灰色 `[ETTerms] shell process exited` 提示；**(6) SSH 斷線可見** — 訂 `ErrorOccurred`/`ShellStream.Closed` 顯示提示，`Write` 例外不再炸 UI thread；**(7) 終端機行為** — 新輸出只在已貼底時跟隨（看歷史不被拉回底部）、alt screen 滾輪轉方向鍵（vim/htop 可滾）、回應 DSR `ESC[6n`/`ESC[5n` 與 DA `ESC[c`（TUI 查游標位置不再卡住）；**(8) TTL** — `_recv` 上限 1MB、wait 輪詢長度沒變不重掃；**(9) 去重複** — `ScriptRunner` 兩個 Run 合併、`TtlScript` 共用選檔/group 指令檢查（SessionPage/WorkspaceView 三份流程收斂）、`ConnectionStore` 讀取改 InvariantCulture+RoundtripKind。註：group `waitall` 一個成員失敗其他成員停在 barrier 是**刻意行為**（使用者要求整組停下），勿「修」。
+
+**v0.3.2：** **(1) 新增左側 `Status` rail view** — 位於 Terminal 與 Settings 之間（圖示 `⚡`，新增 `ActivityRail.RailView.Status` 列舉與 `Items`），獨立 `App/StatusView.cs`，沿用 `SettingsView` 的自繪 tab strip + panel 切換風格（避免 TabControl 白邊）；`MainForm` 加 `_statusView` 欄位、佈局與 rail 切換可見性。目前只有 **PDU 分頁**，未來會再加分頁（`MakeTab(...)` 即可擴充）。**(2) PDU 搬到 Status 並改自動輪詢** — PDU 從 `SettingsView` 移到 `StatusView`，**移除手動 Refresh 按鈕**，連線成功後以 `System.Threading.Timer`（period 3000ms）在**背景執行緒**讀 SNMP、再 `BeginInvoke` 回 UI 更新表格（不卡 UI）；`Interlocked` 旗標防止前一輪未讀完就重入；斷線 / 控制項 Dispose 時自動停掉 timer 與 `PduController`；表格下方顯示「last update HH:mm:ss」。`SettingsView` 移除 `BuildPduTab`/`RefreshPduGrid` 與 `ETTerms.Scripting.Pdu` import，現只剩 **Terminal / AI MCP** 兩分頁。**(2b) PDU 分頁加手動開關鈕** — 狀態表格新增 **Control** 欄（`DataGridViewButtonColumn`），每個 Port 一顆鈕，文字隨狀態切換（ON→「Turn OFF」、OFF→「Turn ON」、未知→「—」）；點擊在背景執行緒呼叫 `PduController.SetPortOn/SetPortOff`（不卡 UI），等 ~400ms 後回讀刷新整表，失敗跳 `MessageBox`；未連線點擊會提示先 Connect，斷線時清空表格避免顯示過時狀態。**(3) 修 `ShellChannel` 啟動目錄 fallback** — 本機 Shell 的 `StartupDirectory` 若已不存在（外接碟拔除 / 資料夾被刪）會 `CreateProcess failed: 267 (ERROR_DIRECTORY)`；改為「為空 **或** `Directory.Exists` 為 false」即 fallback 到使用者家目錄（`Environment.SpecialFolder.UserProfile`，隨登入者變動，例如 `C:\Users\et_wen`），與 Windows PowerShell 行為一致。
+
+**v0.3.1：** 終端機體驗修正（皆在 `src/ETTerms/Terminal/`）。**(1) 深色垂直捲軸** — 新增自繪 `DarkScrollBar`（細長、無箭頭、圓角滑塊，配合 KKTerm 深色主題），`TerminalView` 右側 `Dock=Right` 掛上，`ContentWidth` 扣掉捲軸寬避免文字被蓋，`UpdateScrollBar()` 在 `Feed` / 滾輪 / resize 時同步滑塊範圍與位置，滾輪與拖曳互通。**(2) 多行貼上修正** — `AnsiParser` 新增 `BracketedPaste`（DEC mode 2004）；`TerminalView.Paste()` 在對方啟用 bracketed paste（PSReadLine / Kiro CLI 等）時以 `ESC[200~ … ESC[201~` 包夾整段，視為「單次貼上」而非逐行 Enter 立即送出；未啟用時退回原本逐字送出。**(3) 右鍵複製清反白** — 右鍵複製後清掉 `_hasSel` 並重繪，讓使用者知道已複製。
+
+**v0.3.0：** 新增 **`ETTerms.PduMcp`**（stdio MCP server）：讓 AI agent 直接控制 SNMP PDU 插座。與 serial 不同，PDU 走 SNMP(UDP) **非獨佔**，故 PduMcp **直接打 SNMP、不經 GUI 橋接**（內含精簡版 `PduController`，OID 邏輯複製自 GUI 版，log 走 stderr），GUI 不開著也能用。工具：`pdu_connect` / `pdu_list` / `pdu_set_port` / `pdu_get_port` / `pdu_status` / `pdu_power_cycle` / `pdu_disconnect`，回傳統一 `{ok, result/error}` JSON；連線狀態以行程內單例 `PduRegistry`（IP→controller）保存。`McpRegistrar` 改為多 server，**Settings → AI MCP 一鍵同時註冊 `etterms-serial` 與 `etterms-pdu`**；`ETTerms.csproj` 的 publish target 更名 `PublishMcpServers`，GUI publish 會把兩個 MCP 各自帶到 `\ETTerms.SerialMcp\`、`\ETTerms.PduMcp\` 子資料夾。
+
+**v0.2.1：** 新增 GUI **Settings → AI MCP** 分頁（`McpRegistrar`）：對 Claude Code（`~/.claude.json`）與 Kiro（`~/.kiro/settings/mcp.json`）**一鍵 Setup / Remove** 註冊 `etterms-serial` MCP server，read-modify-write 保留檔內其他設定、原子寫回；卡片附 CLI 驗證指令。`ETTerms.csproj` 加 publish target（`AfterTargets=Publish`），GUI publish 會自動把 MCP server 帶到子資料夾，與 `McpRegistrar.ResolveServerExe()` 解析路徑對齊。

 **v0.2.0：** Phase 9 完成 — `ETTerms.SerialMcp`（stdio MCP server）+ GUI `SerialBridgeServer`（named pipe `\\.\pipe\etterms-serial`）上線，提供 `serial_list` / `serial_attach` / `serial_write` / `serial_read` / `serial_detach` 五個工具，AI 的 TX 在 GUI 以 `[AI]` 標色即時 echo；視窗 / 工作列 / About 改用 Choco 圖示，標題列顯示版本號。見 [docs/serial-mcp-guide.md](docs/serial-mcp-guide.md)。

@@ -27,7 +35,7 @@ ETTerms 是一個 **C# .NET 8 WinForms** 的原生 Windows 終端機工作台，
 - **連線儲存：** SQLite（`Microsoft.Data.Sqlite`）
 - **密碼儲存：** Windows Credential Manager（不落地明碼）
 - **PDU：** SnmpSharpNet（iPoMan II/III via SNMP）
- **AI / MCP（選用）：** stdio MCP server（`ETTerms.SerialMcp`，官方 C# SDK `ModelContextProtocol`）。**不自己開 COM port**，而是經本機 named pipe 接上 GUI 持有的 serial session，把 serial 收發暴露給 Kiro CLI / Claude CLI；AI 的 TX/RX 同步顯示在 GUI
+- **AI / MCP（選用）：** 兩個 stdio MCP server（官方 C# SDK `ModelContextProtocol`）。`ETTerms.SerialMcp`：**不自己開 COM port**，經本機 named pipe 接上 GUI 持有的 serial session，AI 的 TX/RX 同步顯示在 GUI。`ETTerms.PduMcp`（v0.3.0）：**直接打 SNMP** 控制 PDU 插座，非獨佔故不需 GUI 在跑。皆暴露給 Kiro CLI / Claude CLI
 - **設定持久化：** JSON → `%LocalAppData%\ETTerms\settings.json`

 ## 常用指令
@@ -40,14 +48,21 @@ dotnet run --project src\ETTerms\ETTerms.csproj
 # 加套件
 dotnet add src\ETTerms package SSH.NET

-# 打包（見「Publish / 打包慣例」，輸出固定到 src\ETTerms\Publish\ETTerms_v{Version}\）
-# GUI publish 會「自動」把 ETTerms.SerialMcp 一併發到 \ETTerms.SerialMcp\ 子資料夾
-# （ETTerms.csproj 的 PublishSerialMcp target，AfterTargets=Publish），不必再單獨發 MCP。
+# 打包（見「Publish / 打包慣例」）—— 兩種版本都產出，輸出到 src\ETTerms\Publish\
+# GUI publish 會「自動」把 ETTerms.SerialMcp 與 ETTerms.PduMcp 一併發到各自的子資料夾
+# （ETTerms.csproj 的 PublishMcpServers target，AfterTargets=Publish），且 MCP 跟隨 GUI 的 self-contained 設定。
 $ver = ([regex]::Match((Get-Content src\ETTerms\ETTerms.csproj -Raw), '<Version>([^<]+)</Version>')).Groups[1].Value
+
+# A. 框架相依版（需目標機已裝 .NET 8 Desktop Runtime）→ ETTerms_v{Version}\
 $root = "src\ETTerms\Publish\ETTerms_v$ver"
 dotnet publish src\ETTerms\ETTerms.csproj -c Release -r win-x64 --self-contained false -o $root
 Rename-Item (Join-Path $root "ETTerms.exe") "ETTerms v$ver.exe"

+# B. Portable 免安裝版（runtime 內含，免裝、免管理員）→ ETTerms_v{Version}_portable\
+$proot = "src\ETTerms\Publish\ETTerms_v${ver}_portable"
+dotnet publish src\ETTerms\ETTerms.csproj -c Release -r win-x64 --self-contained true -o $proot
+Rename-Item (Join-Path $proot "ETTerms.exe") "ETTerms v$ver.exe"
+
 # 註冊 Serial MCP server（給 AI agent 操作 serial）
 # 推薦：GUI Settings → AI MCP 分頁，對 Claude Code / Kiro 按 Setup 一鍵註冊（McpRegistrar）。
 # 或手動 CLI：
@@ -57,7 +72,7 @@ kiro-cli mcp add --name serial --command dotnet --args "run --project src\ETTerm
 ## 開發慣例

 - **命名：** PascalCase 類別 / 方法，`_camelCase` 私有欄位；檔名 = 類別名。
- **Publish / 打包：** 固定輸出到 `src\ETTerms\Publish\ETTerms_v{Version}\`（`{Version}` 取自 csproj `<Version>`）；主 exe 改名為 `ETTerms v{Version}.exe`；`ETTerms.SerialMcp` 一併發到其下 `ETTerms.SerialMcp\` 子資料夾。框架相依（`--self-contained false -r win-x64`）。詳見 [ARCHITECTURE.md](ARCHITECTURE.md#publish--打包慣例)。
+- **Publish / 打包：** 輸出到 `src\ETTerms\Publish\`；主 exe 改名為 `ETTerms v{Version}.exe`；`ETTerms.SerialMcp` 與 `ETTerms.PduMcp` 一併發到其下 `ETTerms.SerialMcp\`、`ETTerms.PduMcp\` 子資料夾（且跟隨 GUI 的 self-contained 設定）。**兩種版本都產出**：框架相依 `ETTerms_v{Version}\`（`--self-contained false`，需裝 .NET 8 Desktop Runtime）＋ portable 免安裝 `ETTerms_v{Version}_portable\`（`--self-contained true`，runtime 內含）。不要開 trimming（WinForms 反射）。詳見 [ARCHITECTURE.md](ARCHITECTURE.md#publish--打包慣例)。
 - **分層：** UI（`App/`）只認 `ISessionChannel` 抽象，不直接相依 SSH.NET / SerialPort。
 - **執行緒：** channel I/O 在背景；所有 UI 更新一律 `Control.Invoke` 回 UI thread。
 - **commit：** 走 Conventional Commits（`feat:` / `fix:` / `refactor:` …）。
@@ -73,10 +88,14 @@ kiro-cli mcp add --name serial --command dotnet --args "run --project src\ETTerm
 - ⚠️ VT 相容性以常見情境（VT100 / 常見 ANSI）為主，冷門 escape 後補，不阻塞 GUI 進度。
 - ⚠️ 本專案**無伺服端祕密 / 無 DB 密碼 / 無 EC2 / 無 VM**，因此不套用 AWS / VirtualBox 部署流程。
 - ⚠️ Group 同步指令（`waitall` / `sendlnall` / `sendlngroup`）**只能在 Run Group 模式**使用；`▶ Script` 和 `▶ Run All` 須拒絕含這些指令的腳本。
+- ⚠️ Group `waitall` 的 barrier 行為：**一個成員失敗/停止，其他成員會停在 barrier 等** —— 這是刻意設計（整組一起停下來），不是 bug，勿改成 RemoveParticipant。
+- ⚠️ `SshChannel.Resize` 用反射挖 SSH.NET 私有 `_channel` 呼叫 `SendWindowChangeRequest`（該 API 未公開）。**升級 SSH.NET 版本時必須驗證 resize 仍有效**（連上後拉視窗大小看遠端 TUI 是否跟著變）。

 ## 資料夾用途

 - **`src/ETTerms/`** — 主應用程式（WinForms 視窗外殼 + 連線 / 終端機 / 腳本引擎）。
 - **`src/ETTerms.SerialMcp/`** — ✅ stdio MCP server（給 AI agent 收發 serial）。獨立行程，但**不直接開 COM port**：經本機 named pipe 連到 GUI 的 `SerialBridgeServer`，由 GUI 代為讀寫實體 port；net8.0 console + `ModelContextProtocol` SDK。
+- **`src/ETTerms.PduMcp/`** — ✅ stdio MCP server（給 AI agent 控制 SNMP PDU，v0.3.0）。獨立行程，**直接打 SNMP**，不經 GUI、GUI 不開著也能用；net8.0 console + `ModelContextProtocol`，PDU 邏輯用 `ETTerms.PduCore`。
+- **`src/ETTerms.PduCore/`** — ✅ PDU SNMP 控制共用庫（v0.4.0）。GUI 與 PduMcp 共用的唯一 `PduController`（先前兩份複製已移除）；診斷 log 走建構子注入委派（GUI→AppLogger、MCP→stderr）；含批次查詢 `GetAllPortsStatus()`。
 - **`For_AI/`** — AI 協作素材與**參考專案**（`KKTerm-main` UI 參考、`MyTeraTerm` Script 參考）。整個資料夾 gitignored，僅供開發對照。
 - 本專案**無 `secret/` 資料夾**：沒有伺服端祕密 / DB 密碼 / compile-time secret，連線密碼一律走 Windows Credential Manager。
@@ -2,5 +2,7 @@
  <Folder Name="/src/">
    <Project Path="src/ETTerms/ETTerms.csproj" />
    <Project Path="src/ETTerms.SerialMcp/ETTerms.SerialMcp.csproj" />
+    <Project Path="src/ETTerms.PduMcp/ETTerms.PduMcp.csproj" />
+    <Project Path="src/ETTerms.PduCore/ETTerms.PduCore.csproj" />
  </Folder>
 </Solution>
@@ -4,7 +4,7 @@

 > A native Windows terminal workspace (C# .NET 8 WinForms) — **SSH**, **Serial Port**, and **local Shell (ConPTY)** in one window, with a **TTL scripting engine** ported from MyTeraTerm for automation, plus an optional **Serial MCP server** that lets AI agents (Kiro CLI / Claude CLI) drive the serial port directly. Standalone, no cloud, no login.

-![version](https://img.shields.io/badge/version-0.2.1-blue.svg) ![platform](https://img.shields.io/badge/platform-Windows-0078D6.svg?logo=windows&logoColor=white) ![.NET](https://img.shields.io/badge/.NET-8.0-512BD4.svg?logo=dotnet&logoColor=white) ![UI](https://img.shields.io/badge/UI-WinForms-5C2D91.svg) ![SSH](https://img.shields.io/badge/SSH-SSH.NET-success.svg) ![Serial](https://img.shields.io/badge/Serial-System.IO.Ports-success.svg) ![status](https://img.shields.io/badge/status-beta-yellow.svg) ![license](https://img.shields.io/badge/license-MIT-green.svg)
+![version](https://img.shields.io/badge/version-0.3.3-blue.svg) ![platform](https://img.shields.io/badge/platform-Windows-0078D6.svg?logo=windows&logoColor=white) ![.NET](https://img.shields.io/badge/.NET-8.0-512BD4.svg?logo=dotnet&logoColor=white) ![UI](https://img.shields.io/badge/UI-WinForms-5C2D91.svg) ![SSH](https://img.shields.io/badge/SSH-SSH.NET-success.svg) ![Serial](https://img.shields.io/badge/Serial-System.IO.Ports-success.svg) ![status](https://img.shields.io/badge/status-beta-yellow.svg) ![license](https://img.shields.io/badge/license-MIT-green.svg)

 ---

@@ -63,6 +63,7 @@

 - ⚡ **PDU power control (optional)**
  - Control PDU outlets over SNMP (`SnmpSharpNet`) to power-cycle devices during tests
+  - **Status → PDU** tab: connect to a PDU, auto-poll outlet state every 3 s, and toggle any port on/off with per-row **Control** buttons
  - Script commands: `pduconnect` / `pductrl`

 - 🤖 **AI / MCP integration (optional)**
@@ -77,9 +78,10 @@
 ### Terminal Rendering

 - 🎨 Owner-drawn VT100 / ANSI control, double-buffered cell grid
- 🌑 KKTerm-style dark theme (incl. DWM dark title bar)
+- 🌑 KKTerm-style dark theme (incl. DWM dark title bar + dark terminal scrollbar)
 - 🔤 Configurable font / size / palette / scrollback
- 📋 Select / copy / paste
+- 🖱️ Scroll back through long output with the mouse wheel or the dark scrollbar
+- 📋 Select / copy / paste — right-click copy clears the highlight; multi-line paste uses **bracketed paste** so it isn't submitted line-by-line

 ---

@@ -402,6 +404,35 @@ ETTerms/

 ## 📜 Version History

+### v0.3.3
+
+- **Terminal input fix** — after the terminal had printed output (Serial or PowerShell), switching away and back (minimize, or click another app) could leave it unable to accept typing or **Enter**, forcing a session reopen; idle sessions were never affected
+- Cause: once output built up scrollback, the terminal's scrollbar could steal keyboard focus on window re-activation. The scrollbar is now mouse-only and never takes focus, so input keeps working no matter how much has printed
+
+### v0.3.2
+
+- **Status → PDU tab** — a dedicated `Status` rail view hosts the PDU panel: connect by IP, auto-poll all 12 outlets every 3 s (background thread, no manual Refresh), with live current / power readouts
+- **Manual outlet control buttons** — each row has a **Control** button that toggles that port on/off over SNMP; the label tracks state (ON → "Turn OFF", OFF → "Turn ON"), the SNMP set runs off the UI thread, and the grid refreshes after the command
+
+### v0.3.1
+
+- **Terminal usability fixes** — added a **dark vertical scrollbar** (drag or click-to-page through long output instead of long mouse-wheel scrolling)
+- **Multi-line paste** into Kiro CLI / PSReadLine now pastes as a single block (**bracketed paste**, DEC mode 2004) instead of submitting each line immediately
+- Right-click copy now **clears the highlight** so you know it worked
+
+### v0.3.0
+
+- **AI-driven PDU power control (MCP)** — new `ETTerms.PduMcp` server lets AI agents (Kiro CLI / Claude CLI) control an SNMP PDU directly: outlets on/off, status, and power-cycle a DUT during automated tests
+- PDU runs over SNMP (UDP, non-exclusive), so the AI talks to it directly — the ETTerms GUI does not need to be running
+- Tools: `pdu_connect` / `pdu_list` / `pdu_set_port` / `pdu_get_port` / `pdu_status` / `pdu_power_cycle` / `pdu_disconnect`
+- **Settings → AI MCP** now registers both `etterms-serial` and `etterms-pdu` with one click; publishing the GUI auto-bundles both MCP servers
+
+### v0.2.2
+
+- **Terminal stability** — the terminal no longer freezes after minimizing or switching tabs (most noticeable with full-screen TUIs like Kiro CLI in PowerShell); a degenerate 1×1 size is no longer sent to the pseudo-console
+- **Shift+Enter** inserts a newline in the shell, so you can type multi-line commands (plain Enter still submits)
+- **High-DPI fixes** — text and buttons no longer clipped at 125% / 150% scaling (PerMonitorV2); toolbar / settings / sidebar / About now scale adaptively
+
 ### v0.2.1

 - **AI MCP one-click setup** — new **Settings → AI MCP** tab registers the Serial MCP server into Claude Code (`~/.claude.json`) or Kiro (`~/.kiro/settings/mcp.json`) with a single button; existing MCP servers are preserved, and each card shows the verify command
@@ -432,7 +463,7 @@ Licensed under the **MIT License** — see [LICENSE](LICENSE).

 ## 🙏 Acknowledgments

- **[KKTerm](https://github.com/)** — UI design reference (Activity Rail + tabbed workspace + Saved Connections)
+- **[KKTerm](https://github.com/ryantsai/KKTerm)** — by ryantsai (MIT) — UI design reference (Activity Rail + tabbed workspace + Saved Connections)
 - **MyTeraTerm** — source of the TTL scripting engine and `AppLogger`
 - **[SSH.NET](https://github.com/sshnet/SSH.NET)**, **[SnmpSharpNet](http://www.snmpsharpnet.com/)** — open-source connectivity / SNMP libraries
 - **Microsoft** — .NET 8, WinForms, ConPTY, Credential Manager
@@ -4,7 +4,7 @@

 > 原生 Windows 終端機工作台（C# .NET 8 WinForms）—— 一個視窗整合 **SSH**、**Serial Port**、**本機 Shell (ConPTY)** 連線，內建從 MyTeraTerm 移植的 **TTL 腳本引擎**做自動化，並提供選用的 **Serial MCP server**，讓 AI agent（Kiro CLI / Claude CLI）直接操作 serial port。單機、無雲、無登入系統。

-![version](https://img.shields.io/badge/version-0.2.1-blue.svg) ![platform](https://img.shields.io/badge/platform-Windows-0078D6.svg?logo=windows&logoColor=white) ![.NET](https://img.shields.io/badge/.NET-8.0-512BD4.svg?logo=dotnet&logoColor=white) ![UI](https://img.shields.io/badge/UI-WinForms-5C2D91.svg) ![SSH](https://img.shields.io/badge/SSH-SSH.NET-success.svg) ![Serial](https://img.shields.io/badge/Serial-System.IO.Ports-success.svg) ![status](https://img.shields.io/badge/status-beta-yellow.svg) ![license](https://img.shields.io/badge/license-MIT-green.svg)
+![version](https://img.shields.io/badge/version-0.3.3-blue.svg) ![platform](https://img.shields.io/badge/platform-Windows-0078D6.svg?logo=windows&logoColor=white) ![.NET](https://img.shields.io/badge/.NET-8.0-512BD4.svg?logo=dotnet&logoColor=white) ![UI](https://img.shields.io/badge/UI-WinForms-5C2D91.svg) ![SSH](https://img.shields.io/badge/SSH-SSH.NET-success.svg) ![Serial](https://img.shields.io/badge/Serial-System.IO.Ports-success.svg) ![status](https://img.shields.io/badge/status-beta-yellow.svg) ![license](https://img.shields.io/badge/license-MIT-green.svg)

 ---

@@ -63,6 +63,7 @@

 - ⚡ **PDU 電源控制（選用）**
  - 透過 SNMP（`SnmpSharpNet`）控制 PDU 插座，測試中遠端電源循環
+  - **Status → PDU** 分頁：連線 PDU 後每 3 秒自動輪詢插座狀態，並可用各列的 **Control** 鈕直接開 / 關該 Port
  - 腳本指令：`pduconnect` / `pductrl`

 - 🤖 **AI / MCP 整合（選用）**
@@ -77,9 +78,10 @@
 ### 終端機渲染

 - 🎨 自繪 VT100 / ANSI 控制項（owner-drawn），雙緩衝繪字格
- 🌑 KKTerm 風格深色主題（含 DWM 深色標題列）
+- 🌑 KKTerm 風格深色主題（含 DWM 深色標題列 + 深色終端機捲軸）
 - 🔤 可調字型 / 字級 / 配色 / scrollback 行數
- 📋 選取 / 複製 / 貼上
+- 🖱️ 用滑鼠滾輪或深色捲軸往回捲長輸出
+- 📋 選取 / 複製 / 貼上 —— 右鍵複製會清掉反白；多行貼上採 **bracketed paste**，不會被逐行送出

 ---

@@ -402,6 +404,35 @@ ETTerms/

 ## 📜 版本紀錄

+### v0.3.3
+
+- **終端機輸入修正** —— 終端機印過輸出後（Serial 或 PowerShell），切走再切回（縮小視窗、或點其他程式）可能導致無法打字或按 **Enter**，只能重開 session；閒置時則不受影響
+- 原因：輸出累積出 scrollback 後，視窗重新取得焦點時終端機捲軸可能搶走鍵盤焦點。捲軸已改為純滑鼠操作、永不吃焦點，無論印出多少都能正常輸入
+
+### v0.3.2
+
+- **Status → PDU 分頁** —— 新增 `Status` rail 檢視，PDU 面板移到此處：輸入 IP 連線後每 3 秒自動輪詢全部 12 個插座（背景執行緒，免手動 Refresh），即時顯示電流 / 功率
+- **手動插座開關鈕** —— 每列新增 **Control** 鈕，按一下即透過 SNMP 切換該 Port 開 / 關；按鈕文字隨狀態變動（ON →「Turn OFF」、OFF →「Turn ON」），SNMP 設定在 UI 執行緒外執行，下命令後自動回讀刷新表格
+
+### v0.3.1
+
+- **終端機體驗修正** —— 新增**深色垂直捲軸**（拖曳滑塊或點軌道翻頁，不必狂滾滑鼠看長輸出）
+- 貼多行到 Kiro CLI / PSReadLine 現在會**整段一次貼上**（**bracketed paste**，DEC mode 2004），不再逐行立即送出
+- 右鍵複製後會**清掉反白**，讓你知道已複製
+
+### v0.3.0
+
+- **AI 控制 PDU 電源（MCP）** —— 新增 `ETTerms.PduMcp` server，讓 AI agent（Kiro CLI / Claude CLI）直接控制 SNMP PDU：插座開 / 關、讀狀態、自動化測試時 power-cycle 一台 DUT
+- PDU 走 SNMP（UDP，非獨佔），AI 直接打 PDU —— ETTerms GUI 不需開著
+- 工具：`pdu_connect` / `pdu_list` / `pdu_set_port` / `pdu_get_port` / `pdu_status` / `pdu_power_cycle` / `pdu_disconnect`
+- **設定 → AI MCP** 一鍵同時註冊 `etterms-serial` 與 `etterms-pdu`；publish 會自動把兩個 MCP server 一併打包
+
+### v0.2.2
+
+- **終端機穩定性** —— 視窗最小化或切換分頁後終端機不再卡住（跑全螢幕 TUI 如 PowerShell 裡的 Kiro CLI 最明顯）；不再把退化的 1×1 尺寸送給 pseudo-console
+- **Shift+Enter** 在 shell 插入換行，可輸入多行指令（單純 Enter 仍是送出）
+- **高 DPI 修正** —— 125% / 150% 縮放下文字與按鈕不再被裁切（PerMonitorV2）；toolbar / 設定 / 側欄 / About 改為自適應縮放
+
 ### v0.2.1

 - **AI MCP 一鍵設定** —— 新增 **設定 → AI MCP** 分頁，一個按鈕就把 Serial MCP server 註冊進 Claude Code（`~/.claude.json`）或 Kiro（`~/.kiro/settings/mcp.json`）；保留檔內其他既有 MCP server，卡片並顯示驗證指令
@@ -432,7 +463,7 @@ ETTerms/

 ## 🙏 致謝

- **[KKTerm](https://github.com/)** — UI 設計參考（Activity Rail + 分頁工作區 + Saved Connections）
+- **[KKTerm](https://github.com/ryantsai/KKTerm)** — by ryantsai（MIT）UI 設計參考（Activity Rail + 分頁工作區 + Saved Connections）
 - **MyTeraTerm** — TTL 腳本引擎與 `AppLogger` 來源
 - **[SSH.NET](https://github.com/sshnet/SSH.NET)**、**[SnmpSharpNet](http://www.snmpsharpnet.com/)** — 開源連線 / SNMP 函式庫
 - **Microsoft** — .NET 8、WinForms、ConPTY、Credential Manager
@@ -0,0 +1,40 @@
+# v0.3.2 — Status page with PDU outlet control
+
+## ✨ New features
+
+**Status page — control PDU outlets with buttons**
+* New **Status** view (the **⚡** icon on the left, between Terminal and Settings) with a **PDU** tab —
+  connect to your PDU by IP and see every outlet at a glance: state, current (mA) and power (W).
+* Each outlet row now has its own **Control** button: the label tracks the live state
+  (**Turn ON** when off, **Turn OFF** when on), so a single click flips that port. The SNMP command
+  runs off the UI thread, the grid refreshes after the change, and it resets cleanly on disconnect.
+* Outlet status **auto-refreshes every 3 seconds** in the background — no more manual Refresh button.
+* The PDU panel moved out of **Settings** into its own Status tab (Settings now keeps just
+  **Terminal / AI MCP**), and the layout is ready for more Status tabs later.
+
+## 🐛 Bug fixes
+
+**Local Shell startup**
+* Fixed: the local Shell no longer fails to start when its saved working folder is gone
+  (e.g. an unplugged USB drive or a deleted folder), which previously caused
+  `CreateProcess failed: 267 (ERROR_DIRECTORY)`. It now falls back to your home folder,
+  matching Windows PowerShell behavior.
+
+## 📦 Downloads
+
+Two builds are produced:
+
+| Build | Needs .NET 8 Desktop Runtime? | Notes |
+|-------|-------------------------------|-------|
+| **Standard** (`ETTerms_v0.3.2`) | ✅ Yes | Smaller; for machines that already have the runtime |
+| **Portable** (`ETTerms_v0.3.2_portable`) | ❌ No | Runtime bundled — unzip and run, no install / admin needed |
+
+Run `ETTerms v0.3.2.exe`.
+
+## 🔗 Links
+* PDU MCP & Serial MCP setup guide:
+  [docs/serial-mcp-guide.md](https://github.com/ETWen/ETTerms/blob/main/docs/serial-mcp-guide.md)
+* TTL reference:
+  [docs/ttl-script-reference.md](https://github.com/ETWen/ETTerms/blob/main/docs/ttl-script-reference.md)
+
+**Full changelog:** [v0.3.1...v0.3.2](https://github.com/ETWen/ETTerms/compare/v0.3.1...v0.3.2)
@@ -0,0 +1,32 @@
+# v0.3.3 — Terminal input no longer dies after activity
+
+## 🐛 Bug fixes
+
+**Terminal stops accepting input after you switch away and back**
+* Fixed: once the terminal had printed some output (on a **Serial** or **PowerShell** tab),
+  switching away and back — minimizing the window, or clicking another app — could leave the
+  terminal unable to accept any typing or **Enter**. Previously the only way out was to close
+  and reopen the session (re-open the COM port / start a fresh PowerShell).
+* While the session sat idle, this never happened — it only showed up after enough output had
+  scrolled by, which is exactly when it bit you mid-task.
+* Cause: after enough output built up scrollback, the terminal's scrollbar could grab the
+  keyboard focus when the window regained focus, and the scrollbar has no keyboard handling —
+  so your keystrokes went nowhere. The scrollbar is now mouse-only and never takes focus, so
+  the terminal keeps working no matter how much it has printed.
+
+## 📦 Downloads
+
+Two builds are produced:
+
+| Build | Needs .NET 8 Desktop Runtime? | Notes |
+|-------|-------------------------------|-------|
+| **Standard** (`ETTerms_v0.3.3`) | ✅ Yes | Smaller; for machines that already have the runtime |
+| **Portable** (`ETTerms_v0.3.3_portable`) | ❌ No | Runtime bundled — unzip and run, no install / admin needed |
+
+Run `ETTerms v0.3.3.exe`.
+
+## 🔗 Links
+* PDU MCP & Serial MCP setup guide:
+  [docs/serial-mcp-guide.md](https://github.com/ETWen/ETTerms/blob/main/docs/serial-mcp-guide.md)
+
+**Full changelog:** [v0.3.2...v0.3.3](https://github.com/ETWen/ETTerms/compare/v0.3.2...v0.3.3)
@@ -0,0 +1,61 @@
+# v0.4.0 — Performance & stability overhaul
+
+## ✨ New features
+
+**Terminal performance overhaul**
+* Heavy output (long boot logs, big file dumps) now renders much more smoothly — drawing was
+  reworked to stop re-creating fonts and brushes on every frame.
+* Scroll-back history storage was rebuilt so the terminal stays fast no matter how much output
+  has accumulated; previously it got slower and slower once the history buffer filled up.
+
+**Full-screen apps (vim / htop) behave like a real terminal**
+* The mouse wheel now scrolls inside full-screen tools like `vim` and `htop` instead of doing nothing.
+* Tools that ask the terminal "where is the cursor?" now get an answer — fixes full-screen apps
+  that could hang on startup or draw at the wrong position.
+
+**Connection status you can actually see**
+* When an SSH connection drops or hits an error, a message now appears right in the tab —
+  no more sessions that silently stop responding.
+* When the local shell exits (e.g. you type `exit`), the tab shows
+  `[ETTerms] shell process exited` instead of just going dead.
+
+**Faster PDU status (GUI and AI)**
+* Outlet polling now bundles all 12 ports into a few SNMP requests instead of 36 separate ones —
+  the Status page refreshes faster, and an unreachable PDU no longer stalls the poll for minutes.
+* The AI `pdu_status` tool gets the same speed-up.
+
+## 🐛 Bug fixes
+
+**Garbled Chinese / non-English text**
+* Fixed: multi-byte characters could occasionally turn into `�` garbage when text was split
+  across data chunks — this affected TTL script `wait` matching, what the AI reads over the
+  serial bridge, and saved session log files. All three now decode correctly.
+
+**Scrolling**
+* Fixed: while you were scrolled back reading history, any new output yanked the view down to
+  the bottom. The view now stays where you are and only follows when you're already at the bottom.
+
+**Resource & stability**
+* Fixed small memory and handle leaks when opening and closing many local shell tabs over a
+  long session.
+* Fixed: typing into an SSH session after the connection died could crash the window — it now
+  just prints a short "write failed" note in the tab.
+
+## 📦 Downloads
+
+Two builds are produced:
+
+| Build | Needs .NET 8 Desktop Runtime? | Notes |
+|-------|-------------------------------|-------|
+| **Standard** (`ETTerms_v0.4.0`) | ✅ Yes | Smaller; for machines that already have the runtime |
+| **Portable** (`ETTerms_v0.4.0_portable`) | ❌ No | Runtime bundled — unzip and run, no install / admin needed |
+
+Run `ETTerms v0.4.0.exe`.
+
+## 🔗 Links
+* PDU MCP & Serial MCP setup guide:
+  [docs/serial-mcp-guide.md](https://github.com/ETWen/ETTerms/blob/main/docs/serial-mcp-guide.md)
+* TTL reference:
+  [docs/ttl-script-reference.md](https://github.com/ETWen/ETTerms/blob/main/docs/ttl-script-reference.md)
+
+**Full changelog:** [v0.3.3...v0.4.0](https://github.com/ETWen/ETTerms/compare/v0.3.3...v0.4.0)
@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <RootNamespace>ETTerms.PduCore</RootNamespace>
+    <AssemblyName>ETTerms.PduCore</AssemblyName>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="SnmpSharpNet" Version="0.9.7">
+      <NoWarn>NU1701</NoWarn>
+    </PackageReference>
+  </ItemGroup>
+
+</Project>
@@ -0,0 +1,124 @@
+using System.Net;
+using SnmpSharpNet;
+
+namespace ETTerms.PduCore;
+
+/// <summary>
+/// PDU controller for iPoMan II/III models via SNMP。
+/// GUI 與 ETTerms.PduMcp 共用的唯一實作（v0.4.0 起取代兩份複製的版本）。
+/// 診斷輸出走建構子注入的 log 委派：GUI 給 AppLogger、MCP server 給 stderr
+/// （stdio MCP 的 stdout 專供 JSON-RPC，不可污染）。
+/// SNMP 走 UDP、非獨佔，多個行程可同時對同一台 PDU 操作。
+/// </summary>
+public sealed class PduController : IDisposable
+{
+    private readonly string _ip;
+    private readonly Action<string>? _logInfo;
+    private readonly Action<string>? _logWarn;
+
+    private const string Community = "private";
+    private const int SnmpPort = 161;
+    private const int Timeout = 3000;
+
+    public string Ip => _ip;
+
+    public PduController(string ip, Action<string>? logInfo = null, Action<string>? logWarn = null)
+    {
+        _ip = ip;
+        _logInfo = logInfo;
+        _logWarn = logWarn;
+    }
+
+    /// <summary>讀 PDU 型號/名稱 OID；非空且含 "PDU" 代表連得上。</summary>
+    public string? GetModelName() => SnmpGet(".1.3.6.1.4.1.2468.1.4.2.1.1.4");
+
+    public bool CheckConnection()
+    {
+        var name = GetModelName();
+        _logInfo?.Invoke($"[PDU] CheckConnection {_ip}: name='{name ?? "<null>"}'");
+        return !string.IsNullOrEmpty(name) && name.Contains("PDU");
+    }
+
+    public bool SetPortOn(int port) => SnmpSet(PortControlOid(port), new Integer32(3));
+    public bool SetPortOff(int port) => SnmpSet(PortControlOid(port), new Integer32(4));
+
+    /// <summary>true = on, false = off, null = unknown/unreachable.</summary>
+    public bool? GetPortState(int port) => ParseState(SnmpGet(PortStateOid(port)));
+
+    public int? GetPortCurrent(int port) => int.TryParse(SnmpGet(PortCurrentOid(port)), out int v) ? v : null;
+    public double? GetPortPowerWatts(int port) => int.TryParse(SnmpGet(PortPowerOid(port)), out int v) ? v / 10.0 : null;
+
+    /// <summary>
+    /// 一次讀回所有插座的狀態 / 電流(mA) / 功率(W)。
+    /// 以 3 個批次 SNMP GET（每個 PDU 含 <paramref name="portCount"/> 個 varbind）取代
+    /// 逐 port 逐 OID 的 3×N 個請求 —— 12 port 從 36 個 UDP 來回縮成 3 個，
+    /// 逾時時的最壞情況也從 36×Timeout 縮到 3×Timeout。
+    /// </summary>
+    public (bool? State, int? CurrentMilliAmps, double? PowerWatts)[] GetAllPortsStatus(int portCount)
+    {
+        var ports = Enumerable.Range(1, portCount).ToArray();
+        var states = SnmpGetMany(ports.Select(PortStateOid).ToArray());
+        var currents = SnmpGetMany(ports.Select(PortCurrentOid).ToArray());
+        var powers = SnmpGetMany(ports.Select(PortPowerOid).ToArray());
+
+        var result = new (bool?, int?, double?)[portCount];
+        for (int i = 0; i < portCount; i++)
+        {
+            result[i] = (
+                ParseState(states[i]),
+                int.TryParse(currents[i], out int c) ? c : null,
+                int.TryParse(powers[i], out int p) ? p / 10.0 : null);
+        }
+        return result;
+    }
+
+    private static bool? ParseState(string? r) => r == "3" ? true : (r == "2" || r == "4") ? false : null;
+
+    private static string PortControlOid(int port) => $".1.3.6.1.4.1.2468.1.4.2.1.3.2.4.1.2.{port}";
+    private static string PortStateOid(int port) => $".1.3.6.1.4.1.2468.1.4.2.1.3.2.3.1.2.{port}";
+    private static string PortCurrentOid(int port) => $".1.3.6.1.4.1.2468.1.4.2.1.3.2.3.1.3.{port}";
+    private static string PortPowerOid(int port) => $".1.3.6.1.4.1.2468.1.4.2.1.3.2.3.1.5.{port}";
+
+    private bool SnmpSet(string oid, AsnType value)
+    {
+        try
+        {
+            var param = new AgentParameters(new OctetString(Community)) { Version = SnmpVersion.Ver1 };
+            using var target = new UdpTarget((IPAddress)new IpAddress(_ip), SnmpPort, Timeout, 1);
+            var pdu = new SnmpSharpNet.Pdu(PduType.Set);
+            pdu.VbList.Add(new Oid(oid), value);
+            var result = (SnmpV1Packet)target.Request(pdu, param);
+            return result?.Pdu.ErrorStatus == 0;
+        }
+        catch (Exception ex) { _logWarn?.Invoke($"[PDU] SNMP SET {oid} exception: {ex.Message}"); return false; }
+    }
+
+    private string? SnmpGet(string oid)
+    {
+        var r = SnmpGetMany(new[] { oid });
+        return r[0];
+    }
+
+    /// <summary>一個 SNMP GET 帶多個 OID（varbind），回傳同序的值；失敗整批回 null。</summary>
+    private string?[] SnmpGetMany(string[] oids)
+    {
+        var result = new string?[oids.Length];
+        try
+        {
+            var param = new AgentParameters(new OctetString(Community)) { Version = SnmpVersion.Ver1 };
+            using var target = new UdpTarget((IPAddress)new IpAddress(_ip), SnmpPort, Timeout, 1);
+            var pdu = new SnmpSharpNet.Pdu(PduType.Get);
+            foreach (var oid in oids) pdu.VbList.Add(new Oid(oid));
+            var resp = (SnmpV1Packet)target.Request(pdu, param);
+            if (resp == null) { _logWarn?.Invoke($"[PDU] SNMP GET ({oids.Length} oids): no response (timeout)"); return result; }
+            if (resp.Pdu.ErrorStatus != 0) { _logWarn?.Invoke($"[PDU] SNMP GET ({oids.Length} oids): ErrorStatus={resp.Pdu.ErrorStatus}"); return result; }
+            // SNMP GET 回應的 varbind 順序與請求一致，直接依 index 對回去。
+            int n = Math.Min(oids.Length, resp.Pdu.VbList.Count);
+            for (int i = 0; i < n; i++) result[i] = resp.Pdu.VbList[i].Value.ToString();
+        }
+        catch (Exception ex) { _logWarn?.Invoke($"[PDU] SNMP GET ({oids.Length} oids) exception: {ex.Message}"); }
+        return result;
+    }
+
+    public void Dispose() { }
+}
@@ -0,0 +1,21 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <RootNamespace>ETTerms.PduMcp</RootNamespace>
+    <AssemblyName>ETTerms.PduMcp</AssemblyName>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="ModelContextProtocol" Version="1.2.0" />
+    <PackageReference Include="Microsoft.Extensions.Hosting" Version="8.0.1" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ETTerms.PduCore\ETTerms.PduCore.csproj" />
+  </ItemGroup>
+
+</Project>
@@ -0,0 +1,35 @@
+using System.Collections.Concurrent;
+using ETTerms.PduCore;
+
+namespace ETTerms.PduMcp;
+
+/// <summary>
+/// Process-wide registry of connected PDUs, keyed by IP. The MCP server is long-lived,
+/// so connections established by <c>pdu_connect</c> persist across tool calls.
+/// </summary>
+public sealed class PduRegistry
+{
+    public static readonly PduRegistry Instance = new();
+
+    /// <summary>iPoMan II/III outlet count.</summary>
+    public const int PortCount = 12;
+
+    private readonly ConcurrentDictionary<string, PduController> _pdus = new(StringComparer.OrdinalIgnoreCase);
+
+    public PduController GetOrAdd(string ip) =>
+        _pdus.GetOrAdd(ip.Trim(), static k => new PduController(k, Log, Log));
+
+    // stdio MCP server：stdout 專供 JSON-RPC，診斷一律走 stderr。
+    private static void Log(string msg) => Console.Error.WriteLine(msg);
+
+    public bool TryGet(string ip, out PduController pdu) =>
+        _pdus.TryGetValue(ip.Trim(), out pdu!);
+
+    public bool Remove(string ip)
+    {
+        if (_pdus.TryRemove(ip.Trim(), out var pdu)) { pdu.Dispose(); return true; }
+        return false;
+    }
+
+    public IReadOnlyCollection<string> ConnectedIps => _pdus.Keys.ToArray();
+}
@@ -0,0 +1,144 @@
+using System.ComponentModel;
+using System.Text;
+using System.Text.Json;
+using ETTerms.PduCore;
+using ModelContextProtocol.Server;
+
+namespace ETTerms.PduMcp;
+
+/// <summary>
+/// MCP tools exposed to the AI for controlling an SNMP PDU (iPoMan II/III).
+///
+/// Unlike the serial bridge, the PDU is reached directly over SNMP — the ETTerms GUI
+/// does NOT need to be running. Connections are held per-IP and persist for the lifetime
+/// of this MCP server. Always <c>pdu_connect</c> an IP first, then control its ports.
+/// </summary>
+[McpServerToolType]
+public static class PduTools
+{
+    private static readonly JsonSerializerOptions Json = new() { WriteIndented = false };
+
+    [McpServerTool, Description("Connect to a PDU over SNMP by IP and verify it responds. Required before controlling ports. Returns the model name on success.")]
+    public static Task<string> pdu_connect(
+        [Description("PDU IP address, e.g. 192.168.1.21")] string ip)
+    {
+        ip = (ip ?? "").Trim();
+        if (ip.Length == 0) return Err("ip is required");
+        var pdu = PduRegistry.Instance.GetOrAdd(ip);
+        var model = pdu.GetModelName();
+        bool ok = !string.IsNullOrEmpty(model) && model.Contains("PDU");
+        if (!ok)
+        {
+            PduRegistry.Instance.Remove(ip);
+            return Err($"no SNMP response from PDU at {ip} (check IP/network/community)");
+        }
+        return Ok(new { ip, model });
+    }
+
+    [McpServerTool, Description("List PDUs currently connected in this MCP session (by IP).")]
+    public static Task<string> pdu_list()
+        => Ok(new { connected = PduRegistry.Instance.ConnectedIps });
+
+    [McpServerTool, Description("Turn a PDU outlet on or off. The PDU must be connected first via pdu_connect.")]
+    public static Task<string> pdu_set_port(
+        [Description("PDU IP address")] string ip,
+        [Description("Outlet/port number (1-12)")] int port,
+        [Description("true = ON, false = OFF")] bool on)
+    {
+        if (!TryResolve(ip, port, out var pdu, out var error)) return Err(error);
+        bool ok = on ? pdu.SetPortOn(port) : pdu.SetPortOff(port);
+        if (!ok) return Err($"SNMP set failed for {ip} port {port}");
+        return Ok(new { ip, port, state = on ? "on" : "off" });
+    }
+
+    [McpServerTool, Description("Read a single outlet's state, current (mA) and power (W).")]
+    public static Task<string> pdu_get_port(
+        [Description("PDU IP address")] string ip,
+        [Description("Outlet/port number (1-12)")] int port)
+    {
+        if (!TryResolve(ip, port, out var pdu, out var error)) return Err(error);
+        return Ok(PortSnapshot(pdu, port));
+    }
+
+    [McpServerTool, Description("Read the state, current (mA) and power (W) of all outlets on the PDU.")]
+    public static Task<string> pdu_status(
+        [Description("PDU IP address")] string ip)
+    {
+        if (!PduRegistry.Instance.TryGet(ip, out var pdu))
+            return Err($"PDU {ip} not connected. Call pdu_connect first.");
+        // 批次 SNMP GET：12 port 只需 3 個 UDP 來回，而非逐 port 逐 OID 36 個。
+        var all = pdu.GetAllPortsStatus(PduRegistry.PortCount);
+        var ports = new List<object>();
+        for (int p = 0; p < all.Length; p++)
+        {
+            var (state, current, power) = all[p];
+            ports.Add(new
+            {
+                port = p + 1,
+                state = state == true ? "on" : state == false ? "off" : "unknown",
+                currentMilliAmps = current,
+                powerWatts = power
+            });
+        }
+        return Ok(new { ip, ports });
+    }
+
+    [McpServerTool, Description("Power-cycle an outlet: turn it OFF, wait offSeconds, then turn it ON. Useful for rebooting a DUT.")]
+    public static async Task<string> pdu_power_cycle(
+        [Description("PDU IP address")] string ip,
+        [Description("Outlet/port number (1-12)")] int port,
+        [Description("Seconds to stay off before powering back on")] int offSeconds = 5)
+    {
+        if (!TryResolve(ip, port, out var pdu, out var error)) return await Err(error);
+        if (offSeconds < 0) offSeconds = 0;
+        if (!pdu.SetPortOff(port)) return await Err($"SNMP off failed for {ip} port {port}");
+        await Task.Delay(offSeconds * 1000);
+        if (!pdu.SetPortOn(port)) return await Err($"SNMP on failed for {ip} port {port}");
+        return await Ok(new { ip, port, action = "power_cycle", offSeconds, state = "on" });
+    }
+
+    [McpServerTool, Description("Disconnect a PDU from this MCP session (does not change outlet states).")]
+    public static Task<string> pdu_disconnect(
+        [Description("PDU IP address")] string ip)
+        => Ok(new { ip, removed = PduRegistry.Instance.Remove(ip) });
+
+    // ── helpers ──
+
+    private static bool TryResolve(string ip, int port, out PduController pdu, out string error)
+    {
+        pdu = null!;
+        error = "";
+        if (port < 1 || port > PduRegistry.PortCount)
+        {
+            error = $"port must be 1-{PduRegistry.PortCount}";
+            return false;
+        }
+        if (!PduRegistry.Instance.TryGet(ip, out pdu))
+        {
+            error = $"PDU {ip} not connected. Call pdu_connect first.";
+            return false;
+        }
+        return true;
+    }
+
+    private static object PortSnapshot(PduController pdu, int port)
+    {
+        var state = pdu.GetPortState(port);
+        return new
+        {
+            port,
+            state = state == true ? "on" : state == false ? "off" : "unknown",
+            currentMilliAmps = pdu.GetPortCurrent(port),
+            powerWatts = pdu.GetPortPowerWatts(port)
+        };
+    }
+
+    private static Task<string> Ok(object payload)
+    {
+        var node = new { ok = true, result = payload };
+        return Task.FromResult(JsonSerializer.Serialize(node, Json));
+    }
+
+    private static Task<string> Err(string message)
+        => Task.FromResult(JsonSerializer.Serialize(new { ok = false, error = message }, Json));
+}
@@ -0,0 +1,17 @@
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Logging;
+
+// stdio MCP server：把 SNMP PDU 控制暴露給 AI（Kiro / Claude CLI）。
+// 與 ETTerms.SerialMcp 不同，PDU 走 SNMP(UDP) 非獨佔，故直接打 SNMP，不需 GUI 在跑。
+var builder = Host.CreateApplicationBuilder(args);
+
+// stdio 傳輸：stdout 專供 JSON-RPC，log 一律走 stderr，否則會污染協議。
+builder.Logging.AddConsole(o => o.LogToStandardErrorThreshold = LogLevel.Trace);
+
+builder.Services
+    .AddMcpServer()
+    .WithStdioServerTransport()
+    .WithToolsFromAssembly();
+
+await builder.Build().RunAsync();
@@ -21,7 +21,7 @@ public sealed class AboutView : UserControl
        var left = new FlowLayoutPanel
        {
            Dock = DockStyle.Left, Width = 380, FlowDirection = FlowDirection.TopDown,
-            WrapContents = false, AutoScroll = false, Padding = new Padding(20),
+            WrapContents = false, AutoScroll = true, Padding = new Padding(20),
            BackColor = Theme.WorkspaceBack
        };

@@ -73,7 +73,7 @@ public sealed class AboutView : UserControl
        {
            var header = new Label
            {
-                AutoSize = false, Width = 500, Height = 22,
+                AutoSize = true,
                Text = $"● v{entry.Version}  ·  {entry.Title}    ({entry.Date:yyyy-MM-dd})",
                ForeColor = Theme.Accent, Font = Theme.UiFontBold,
                Margin = new Padding(0, 8, 0, 2)
@@ -83,7 +83,7 @@ public sealed class AboutView : UserControl
            {
                right.Controls.Add(new Label
                {
-                    AutoSize = false, Width = 500, Height = 20,
+                    AutoSize = true,
                    Text = $"    • {change}",
                    ForeColor = Theme.Text, Font = Theme.UiFont,
                    Margin = new Padding(0)
@@ -99,18 +99,17 @@ public sealed class AboutView : UserControl

    private static Panel MakeCard(int width, int height, Action<FlowLayoutPanel> build)
    {
-        var card = new Panel
+        // 卡片本身就是 TopDown 的 AutoSize FlowLayoutPanel：高度永遠長到容得下內容
+        // （高 DPI 字變大也不會被裁），MinimumSize 維持 100% 的設計尺寸。
+        var card = new FlowLayoutPanel
        {
-            Width = width, Height = height, Margin = new Padding(0, 0, 0, 12),
+            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)
        };
-        var flow = new FlowLayoutPanel
-        {
-            Dock = DockStyle.Fill, FlowDirection = FlowDirection.TopDown,
-            WrapContents = false, BackColor = Theme.TabBack, AutoSize = false
-        };
-        build(flow);
-        card.Controls.Add(flow);
+        build(card);
        return card;
    }

@@ -149,24 +148,31 @@ public sealed class AboutView : UserControl
    {
        return new Label
        {
-            AutoSize = false, Width = 310, Height = 20,
+            AutoSize = true,
            Text = text, Font = font, ForeColor = color,
-            TextAlign = align, Margin = new Padding(0)
+            TextAlign = align, Margin = new Padding(0, 1, 0, 1)
        };
    }

-    private static Panel MakeRow(string label, string value)
+    private static Control MakeRow(string label, string value)
    {
-        var row = new Panel { Width = 310, Height = 20, Margin = new Padding(0, 2, 0, 0), BackColor = Color.Transparent };
+        var row = new FlowLayoutPanel
+        {
+            AutoSize = true, AutoSizeMode = AutoSizeMode.GrowAndShrink,
+            FlowDirection = FlowDirection.LeftToRight, WrapContents = false,
+            Margin = new Padding(0, 2, 0, 0), BackColor = Color.Transparent
+        };
        row.Controls.Add(new Label
        {
-            Text = value, AutoSize = false, Width = 230, Height = 20, Dock = DockStyle.Right,
-            ForeColor = Theme.Text, Font = Theme.UiFont, TextAlign = ContentAlignment.MiddleRight
+            Text = label, AutoSize = true, MinimumSize = new Size(70, 0),
+            ForeColor = Theme.TextDim, Font = Theme.UiFont,
+            TextAlign = ContentAlignment.MiddleLeft, Margin = new Padding(0, 0, 8, 0)
        });
        row.Controls.Add(new Label
        {
-            Text = label, AutoSize = false, Width = 70, Height = 20, Dock = DockStyle.Left,
-            ForeColor = Theme.TextDim, Font = Theme.UiFont, TextAlign = ContentAlignment.MiddleLeft
+            Text = value, AutoSize = true,
+            ForeColor = Theme.Text, Font = Theme.UiFont,
+            TextAlign = ContentAlignment.MiddleLeft, Margin = new Padding(0)
        });
        return row;
    }
@@ -177,6 +183,47 @@ public sealed class AboutView : UserControl

    private static readonly ChangelogEntry[] Changelog =
    [
+        new("0.4.0", new DateOnly(2026, 7, 2), "Performance & stability overhaul",
+        [
+            "The terminal is much smoother during heavy output (long boot logs, big file dumps) — drawing and scroll history were reworked to stay fast no matter how much text has scrolled by.",
+            "Fixed Chinese and other non-English text occasionally turning into garbled characters — in script 'wait' matching, in what the AI reads from the serial port, and in saved session logs.",
+            "While you are scrolled back reading history, new output no longer yanks the view down to the bottom.",
+            "The mouse wheel now scrolls inside full-screen tools like vim and htop instead of doing nothing.",
+            "Full-screen tools that ask the terminal where the cursor is now get an answer, fixing apps that could hang or draw at the wrong position.",
+            "You now see a clear message in the tab when an SSH connection drops or the local shell exits, instead of the session silently going dead.",
+            "PDU status refresh is much faster and lighter on the network (one bundled query instead of 36 separate ones).",
+            "Fixed small memory and handle leaks when opening many local shell tabs over a long session.",
+        ]),
+        new("0.3.3", new DateOnly(2026, 6, 16), "Bugfix — terminal input no longer dies after activity",
+        [
+            "Fixed: after the terminal had printed output (Serial or PowerShell), switching away and back — minimizing, or clicking another window — left the terminal unable to accept any typing or Enter, forcing you to reopen the session.",
+            "Cause: once enough output scrolled by, the terminal's scrollbar could steal the keyboard focus when the window regained focus. The scrollbar is now mouse-only and never takes focus, so input keeps working.",
+        ]),
+        new("0.3.2", new DateOnly(2026, 6, 11), "New Status page — control PDU outlets with buttons",
+        [
+            "New Status page (the ⚡ icon on the left) with a PDU tab — connect to your PDU by IP and see every outlet at a glance.",
+            "Each outlet now has its own on/off button: the button shows \"Turn ON\" or \"Turn OFF\" depending on the current state, so one click flips it.",
+            "Outlet status, current and power refresh automatically every 3 seconds — no need to hit Refresh anymore.",
+            "Fixed: the local Shell no longer fails to start when its saved folder is gone (e.g. an unplugged USB drive); it now falls back to your home folder.",
+        ]),
+        new("0.3.1", new DateOnly(2026, 6, 8), "Bugfix — terminal usability",
+        [
+            "Added a scrollbar on the right of the terminal — just drag it to look back through long output, instead of spinning the mouse wheel for ages.",
+            "Fixed pasting multiple lines into Kiro CLI (and similar tools): the whole block now pastes in one go, instead of each line being sent off immediately.",
+            "After you right-click to copy, the highlight now clears so you can tell the copy actually worked.",
+        ]),
+        new("0.3.0", new DateOnly(2026, 6, 8), "AI power control for PDU outlets",
+        [
+            "AI assistants (Kiro / Claude) can now switch your PDU power outlets on and off for you.",
+            "Great for automated testing — the AI can power-cycle (restart) a connected device by itself.",
+            "Works even when the main ETTerms window isn't open.",
+            "One click in Settings → AI MCP now sets up both the Serial and PDU AI helpers at the same time.",
+        ]),
+        new("0.2.2", new DateOnly(2026, 6, 5), "Bugfix — terminal stability",
+        [
+            "Fixed: the terminal no longer freezes after minimizing or switching tabs (notably in PowerShell / Kiro).",
+            "Added: Shift+Enter inserts a newline in the shell, so you can type multi-line commands.",
+        ]),
        new("0.2.1", new DateOnly(2026, 6, 4), "AI MCP one-click setup",
        [
            "New Settings → AI MCP tab: register the Serial MCP server into Claude Code or Kiro with one click.",
@@ -10,17 +10,20 @@ namespace ETTerms.App;
 /// </summary>
 public sealed class ActivityRail : UserControl
 {
-    public enum RailView { Terminal, Settings, About }
+    public enum RailView { Terminal, Status, Settings, About }

    public event EventHandler<RailView>? ViewSelected;

    private RailView _active = RailView.Terminal;
    private RailView? _hover;

-    private const int ItemSize = 56;
+    private const int BaseItemSize = 56;
+    /// <summary>依目前螢幕 DPI 縮放的格子大小（owner-draw 不會自動縮放像素，需自己換算）。</summary>
+    private int ItemSize => (int)Math.Round(BaseItemSize * (DeviceDpi / 96.0));
    private static readonly (RailView view, string glyph, string tip)[] Items =
    {
        (RailView.Terminal, "▤", "Terminal"),
+        (RailView.Status, "⚡", "Status"),
        (RailView.Settings, "⚙", "Settings"),
        (RailView.About, "ℹ", "About"),
    };
@@ -37,6 +40,19 @@ public sealed class ActivityRail : UserControl
        Cursor = Cursors.Hand;
    }

+    protected override void OnHandleCreated(EventArgs e)
+    {
+        base.OnHandleCreated(e);
+        Width = ItemSize;   // handle 建立後 DeviceDpi 才正確，依實際 DPI 重設寬度
+    }
+
+    protected override void OnDpiChangedAfterParent(EventArgs e)
+    {
+        base.OnDpiChangedAfterParent(e);
+        Width = ItemSize;   // 拖到不同縮放的螢幕時跟著調整
+        Invalidate();
+    }
+
    [System.ComponentModel.DesignerSerializationVisibility(
        System.ComponentModel.DesignerSerializationVisibility.Hidden)]
    public RailView ActiveView
@@ -49,10 +49,11 @@ public sealed class ConnectionSidebar : UserControl
        BackColor = Theme.SidebarBack;

        // ── Tab bar (Sessions / SFTP) ──
+        // 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 = 30, BackColor = Theme.RailBack,
-            Padding = new Padding(4, 3, 4, 0), WrapContents = false
+            Dock = DockStyle.Top, Height = 40, BackColor = Theme.RailBack,
+            Padding = new Padding(4, 7, 4, 0), WrapContents = false
        };

        var sessionsPanel = new Panel { Dock = DockStyle.Fill, BackColor = Theme.SidebarBack };
@@ -63,7 +64,9 @@ public sealed class ConnectionSidebar : UserControl
        {
            var b = new Button
            {
-                Text = text, Width = 70, Height = 24, FlatStyle = FlatStyle.Flat,
+                Text = text, AutoSize = true, AutoSizeMode = AutoSizeMode.GrowAndShrink,
+                MinimumSize = new Size(70, 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
            };
@@ -217,7 +220,9 @@ public sealed class ConnectionSidebar : UserControl
        var sshCombo = new ComboBox { Width = 120, DropDownStyle = ComboBoxStyle.DropDownList, BackColor = Theme.TabBack, ForeColor = Theme.Text, Font = Theme.UiFont };
        var connectBtn = new Button
        {
-            Text = "Connect", Width = 64, Height = 24, FlatStyle = FlatStyle.Flat,
+            Text = "Connect", AutoSize = true, AutoSizeMode = AutoSizeMode.GrowAndShrink,
+            MinimumSize = new Size(64, 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)
        };
        connectBtn.FlatAppearance.BorderColor = Theme.SerialColor;
@@ -18,8 +18,10 @@ partial class MainForm
    {
        SuspendLayout();

-        AutoScaleDimensions = new SizeF(7F, 15F);
-        AutoScaleMode = AutoScaleMode.Font;
+        // 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);
        BackColor = Theme.WorkspaceBack;
@@ -14,6 +14,7 @@ public partial class MainForm : Form
    private readonly ActivityRail _rail = new();
    private readonly ConnectionSidebar _sidebar = new();
    private readonly WorkspaceView _workspace = new();
+    private readonly StatusView _statusView = new();
    private readonly SettingsView _settings = new();
    private readonly AboutView _about = new();
    private readonly StatusStrip _status = new();
@@ -45,11 +46,13 @@ public partial class MainForm : Form
    private void BuildLayout()
    {
        Controls.Add(_workspace);   // Fill
+        Controls.Add(_statusView);  // Fill (hidden)
        Controls.Add(_settings);    // Fill (hidden)
        Controls.Add(_about);       // Fill (hidden)
        Controls.Add(_sidebar);     // Left (內側)
        Controls.Add(_rail);        // Left (最外側)

+        _statusView.Visible = false;
        _settings.Visible = false;
        _about.Visible = false;

@@ -68,6 +71,7 @@ public partial class MainForm : Form
            _statusLabel.Text = $"View: {view}";
            _sidebar.Visible = view == ActivityRail.RailView.Terminal;
            _workspace.Visible = view == ActivityRail.RailView.Terminal;
+            _statusView.Visible = view == ActivityRail.RailView.Status;
            _settings.Visible = view == ActivityRail.RailView.Settings;
            _about.Visible = view == ActivityRail.RailView.About;
            AppLogger.LogInfo($"View selected: {view}");
@@ -1,11 +1,10 @@
 using System.Drawing;
 using System.Windows.Forms;
 using ETTerms.Infrastructure;
-using ETTerms.Scripting.Pdu;

 namespace ETTerms.App;

-/// <summary>Settings page with tabs: Terminal / PDU / AI MCP.</summary>
+/// <summary>Settings page with tabs: Terminal / AI MCP.</summary>
 public sealed class SettingsView : UserControl
 {
    public SettingsView()
@@ -33,7 +32,9 @@ public sealed class SettingsView : UserControl

            var b = new Button
            {
-                Text = text, AutoSize = false, Width = 80, Height = 26, FlatStyle = FlatStyle.Flat,
+                Text = text, AutoSize = true, AutoSizeMode = AutoSizeMode.GrowAndShrink,
+                MinimumSize = new Size(70, 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
            };
@@ -51,7 +52,6 @@ public sealed class SettingsView : UserControl

        var termBtn = MakeTab("Terminal", BuildTerminalTab());
        tabBar.Controls.Add(termBtn);
-        tabBar.Controls.Add(MakeTab("PDU", BuildPduTab()));
        tabBar.Controls.Add(MakeTab("AI MCP", BuildAiMcpTab()));

        Controls.Add(body);
@@ -171,106 +171,6 @@ public sealed class SettingsView : UserControl
        return page;
    }

-    // ═══ PDU Tab ═══
-    private Panel BuildPduTab()
-    {
-        var page = new Panel { BackColor = Theme.WorkspaceBack, Padding = new Padding(20) };
-
-        var flow = new FlowLayoutPanel
-        {
-            Dock = DockStyle.Fill, FlowDirection = FlowDirection.TopDown,
-            WrapContents = false, BackColor = Theme.WorkspaceBack, AutoScroll = true
-        };
-
-        // Connection row
-        var ipBox = new TextBox { Width = 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) };
-        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);
-        connRow.Controls.Add(statusLabel);
-        flow.Controls.Add(connRow);
-
-        // Port status grid
-        var grid = new DataGridView
-        {
-            Width = 480, Height = 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 },
-            ColumnHeadersDefaultCellStyle = { BackColor = Theme.RailBack, ForeColor = Theme.Accent, Font = Theme.UiFontBold },
-            ColumnHeadersBorderStyle = DataGridViewHeaderBorderStyle.Single,
-            EnableHeadersVisualStyles = false, RowHeadersVisible = false,
-            AllowUserToAddRows = false, AllowUserToDeleteRows = false, ReadOnly = true,
-            AllowUserToResizeRows = false, SelectionMode = DataGridViewSelectionMode.FullRowSelect,
-            ScrollBars = ScrollBars.None, Font = Theme.UiFont,
-            RowTemplate = { Height = 24 },
-            Margin = new Padding(0, 8, 0, 8)
-        };
-        grid.Columns.Add("Port", "Port");
-        grid.Columns.Add("Status", "Status");
-        grid.Columns.Add("Current", "Current (mA)");
-        grid.Columns.Add("Power", "Power (W)");
-        for (int i = 1; i <= 12; i++)
-            grid.Rows.Add($"Port {i}", "—", "—", "—");
-        flow.Controls.Add(grid);
-
-        // Refresh button
-        var refreshBtn = MakeButton("Refresh", Theme.Accent);
-        flow.Controls.Add(refreshBtn);
-
-        // Logic
-        PduController? pdu = null;
-
-        connectBtn.Click += (_, _) =>
-        {
-            if (pdu != null) { pdu.Dispose(); pdu = null; statusLabel.Text = "Disconnected"; statusLabel.ForeColor = Theme.TextDim; connectBtn.Text = "Connect"; return; }
-            var ip = ipBox.Text.Trim();
-            var p = new PduController(ip);
-            if (p.CheckConnection())
-            {
-                pdu = p;
-                statusLabel.Text = $"Connected to {ip}";
-                statusLabel.ForeColor = Theme.SerialColor;
-                connectBtn.Text = "Disconnect";
-                RefreshPduGrid(pdu, grid);
-            }
-            else
-            {
-                p.Dispose();
-                MessageBox.Show(this, $"Failed to connect to PDU at {ip}", "PDU", MessageBoxButtons.OK, MessageBoxIcon.Warning);
-            }
-        };
-
-        refreshBtn.Click += (_, _) =>
-        {
-            if (pdu == null) { MessageBox.Show(this, "Connect to PDU first.", "PDU", MessageBoxButtons.OK, MessageBoxIcon.Information); return; }
-            RefreshPduGrid(pdu, grid);
-        };
-
-        page.Controls.Add(flow);
-        return page;
-    }
-
-    private static void RefreshPduGrid(PduController pdu, DataGridView grid)
-    {
-        for (int i = 0; i < 12; i++)
-        {
-            int port = i + 1;
-            var state = pdu.GetPortState(port);
-            var current = pdu.GetPortCurrent(port);
-            var power = pdu.GetPortPowerWatts(port);
-            var row = grid.Rows[i];
-            row.Cells["Status"].Value = state == true ? "ON" : state == false ? "OFF" : "—";
-            row.Cells["Current"].Value = current.HasValue ? $"{current.Value}" : "—";
-            row.Cells["Power"].Value = power.HasValue ? $"{power.Value:F1}" : "—";
-            row.DefaultCellStyle.BackColor = state == true ? Color.FromArgb(40, 80, 40) : state == false ? Color.FromArgb(60, 40, 40) : Theme.TabBack;
-        }
-    }
-
    // ═══ AI MCP Tab ═══
    private Panel BuildAiMcpTab()
    {
@@ -289,28 +189,30 @@ public sealed class SettingsView : UserControl
        });
        flow.Controls.Add(new Label
        {
-            Text = "One-click register the ETTerms Serial MCP server into your AI CLI's user-level\n" +
-                   "config. ETTerms keeps sole ownership of the COM port; the AI drives serial through\n" +
-                   "a local named pipe. Open a Serial session in ETTerms first, then the AI can attach.",
-            AutoSize = false, Width = 600, Height = 56,
+            Text = "One-click register the ETTerms MCP servers (Serial + PDU) into your AI CLI's\n" +
+                   "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,
            ForeColor = Theme.TextDim, Font = Theme.UiFont, Margin = new Padding(0, 0, 0, 8)
        });

-        // Resolved MCP server exe
-        var exe = McpRegistrar.ResolveServerExe();
-        var exists = McpRegistrar.ServerExeExists();
-        flow.Controls.Add(new Label
-        {
-            Text = $"MCP server:  {exe}",
-            AutoSize = false, Width = 600, Height = 20,
-            ForeColor = exists ? Theme.SerialColor : Color.FromArgb(210, 150, 120),
-            Font = Theme.UiFont, Margin = new Padding(0, 0, 0, 2)
-        });
-        if (!exists)
+        // Resolved MCP server exes (serial + pdu)
+        foreach (var (name, exe, exists) in McpRegistrar.ServerInfos())
        {
            flow.Controls.Add(new Label
            {
-                Text = "⚠ Not found yet — publish the app (or build ETTerms.SerialMcp). Setup still writes this expected path.",
+                Text = $"{name}:  {exe}",
+                AutoSize = false, Width = 600, Height = 20,
+                ForeColor = exists ? Theme.SerialColor : Color.FromArgb(210, 150, 120),
+                Font = Theme.UiFont, Margin = new Padding(0, 0, 0, 2)
+            });
+        }
+        if (!McpRegistrar.ServerExeExists())
+        {
+            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,
                ForeColor = Color.FromArgb(210, 150, 120), Font = Theme.UiFont, Margin = new Padding(0, 0, 0, 4)
            });
@@ -432,25 +334,27 @@ public sealed class SettingsView : UserControl
    }

    // ── Helpers ──
-    private const int LabelWidth = 150;   // 標籤欄固定寬度
+    private const int LabelWidth = 150;   // 標籤欄最小寬度
    private const int InputWidth = 200;   // 所有輸入框統一寬度

-    private static Panel MakeRow(string label, Control control)
+    private static Control MakeRow(string label, Control control)
    {
-        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
+        // 用 FlowLayout + AutoSize 標籤取代絕對定位，讓高 DPI 下標籤變寬也不會被裁、且對齊穩定
+        var row = new FlowLayoutPanel
        {
-            Text = label, AutoSize = false, Width = LabelWidth, Height = row.Height,
-            Location = new Point(0, 0), ForeColor = Theme.Text, Font = Theme.UiFont,
-            TextAlign = ContentAlignment.MiddleLeft
-        });
+            AutoSize = true, AutoSizeMode = AutoSizeMode.GrowAndShrink,
+            FlowDirection = FlowDirection.LeftToRight, WrapContents = false,
+            Margin = new Padding(0, 3, 0, 3), BackColor = Color.Transparent
+        };
+        var lbl = new Label
+        {
+            Text = label, AutoSize = true, MinimumSize = new Size(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;
+        row.Controls.Add(lbl);
+        row.Controls.Add(control);
        return row;
    }

@@ -458,7 +362,9 @@ public sealed class SettingsView : UserControl
    {
        var b = new Button
        {
-            Text = text, Width = 90, Height = 28, FlatStyle = FlatStyle.Flat,
+            Text = text, AutoSize = true, AutoSizeMode = AutoSizeMode.GrowAndShrink,
+            MinimumSize = new Size(90, 28), 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)
        };
@@ -0,0 +1,286 @@
+using System.Drawing;
+using System.Windows.Forms;
+using ETTerms.Infrastructure;
+using ETTerms.PduCore;
+
+namespace ETTerms.App;
+
+/// <summary>
+/// Status page with tabs: PDU (more views to come).
+/// 風格參考 <see cref="SettingsView"/>：自繪 tab strip + panel 切換，避免 TabControl 白邊。
+/// PDU 分頁連線後每 3 秒於背景自動輪詢插座狀態（不需手動 Refresh）。
+/// </summary>
+public sealed class StatusView : UserControl
+{
+    public StatusView()
+    {
+        Dock = DockStyle.Fill;
+        BackColor = Theme.WorkspaceBack;
+
+        var tabBar = new FlowLayoutPanel
+        {
+            Dock = DockStyle.Top, Height = 32, BackColor = Theme.RailBack,
+            Padding = new Padding(4, 4, 4, 0), WrapContents = false
+        };
+
+        var body = new Panel { Dock = DockStyle.Fill, BackColor = Theme.WorkspaceBack };
+        var pages = new List<Panel>();
+
+        Button? activeBtn = null;
+        Button MakeTab(string text, Panel page)
+        {
+            page.Dock = DockStyle.Fill;
+            page.Visible = false;
+            body.Controls.Add(page);
+            pages.Add(page);
+
+            var b = new Button
+            {
+                Text = text, AutoSize = true, AutoSizeMode = AutoSizeMode.GrowAndShrink,
+                MinimumSize = new Size(70, 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
+            };
+            b.FlatAppearance.BorderColor = Theme.Border;
+            b.FlatAppearance.MouseOverBackColor = Theme.Hover;
+            b.Click += (_, _) =>
+            {
+                foreach (var p in pages) p.Visible = p == page;
+                if (activeBtn != null) activeBtn.BackColor = Theme.TabBack;
+                b.BackColor = Theme.TabActiveBack;
+                activeBtn = b;
+            };
+            return b;
+        }
+
+        var pduBtn = MakeTab("PDU", BuildPduTab());
+        tabBar.Controls.Add(pduBtn);
+
+        Controls.Add(body);
+        Controls.Add(tabBar);
+
+        pduBtn.PerformClick();
+    }
+
+    // ═══ PDU Tab ═══
+    private Panel BuildPduTab()
+    {
+        var page = new Panel { BackColor = Theme.WorkspaceBack, Padding = new Padding(20) };
+
+        var flow = new FlowLayoutPanel
+        {
+            Dock = DockStyle.Fill, FlowDirection = FlowDirection.TopDown,
+            WrapContents = false, BackColor = Theme.WorkspaceBack, AutoScroll = true
+        };
+
+        // Connection row
+        var ipBox = new TextBox { Width = 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) };
+        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);
+        connRow.Controls.Add(statusLabel);
+        flow.Controls.Add(connRow);
+
+        // Port status grid
+        var grid = new DataGridView
+        {
+            Width = 480, Height = 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 },
+            ColumnHeadersDefaultCellStyle = { BackColor = Theme.RailBack, ForeColor = Theme.Accent, Font = Theme.UiFontBold },
+            ColumnHeadersBorderStyle = DataGridViewHeaderBorderStyle.Single,
+            EnableHeadersVisualStyles = false, RowHeadersVisible = false,
+            AllowUserToAddRows = false, AllowUserToDeleteRows = false, ReadOnly = true,
+            AllowUserToResizeRows = false, SelectionMode = DataGridViewSelectionMode.FullRowSelect,
+            ScrollBars = ScrollBars.None, Font = Theme.UiFont,
+            RowTemplate = { Height = 24 },
+            Margin = new Padding(0, 8, 0, 8)
+        };
+        grid.Columns.Add("Port", "Port");
+        grid.Columns.Add("Status", "Status");
+        grid.Columns.Add("Current", "Current (mA)");
+        grid.Columns.Add("Power", "Power (W)");
+
+        // 控制按鈕欄：按一下切換該 Port 的 ON/OFF
+        var actionCol = new DataGridViewButtonColumn
+        {
+            Name = "Action", HeaderText = "Control",
+            UseColumnTextForButtonValue = false, FlatStyle = FlatStyle.Flat,
+            FillWeight = 80,
+            DefaultCellStyle =
+            {
+                BackColor = Theme.TabBack, ForeColor = Theme.Text,
+                SelectionBackColor = Theme.Hover, SelectionForeColor = Theme.Text,
+                Alignment = DataGridViewContentAlignment.MiddleCenter
+            }
+        };
+        grid.Columns.Add(actionCol);
+
+        for (int i = 1; i <= 12; i++)
+            grid.Rows.Add($"Port {i}", "—", "—", "—", "—");
+        flow.Controls.Add(grid);
+
+        // 連線後每 3 秒自動輪詢（背景執行緒讀 SNMP，Invoke 回 UI 更新）
+        var pollLabel = new Label { AutoSize = true, Text = "", ForeColor = Theme.TextDim, Font = Theme.UiFont, Margin = new Padding(0, 4, 0, 0) };
+        flow.Controls.Add(pollLabel);
+
+        // Logic
+        PduController? pdu = null;
+        System.Threading.Timer? timer = null;
+        int polling = 0;   // 0=idle, 1=in-flight（避免上一次未讀完又疊一次）
+
+        void StopPolling()
+        {
+            timer?.Dispose();
+            timer = null;
+        }
+
+        void PollOnce()
+        {
+            // 已在輪詢中就跳過這一輪
+            if (System.Threading.Interlocked.Exchange(ref polling, 1) == 1) return;
+            var current = pdu;
+            if (current == null) { System.Threading.Volatile.Write(ref polling, 0); return; }
+
+            try
+            {
+                // 批次 SNMP GET：12 port 只需 3 個 UDP 來回（原本逐 port 逐 OID 36 個，
+                // 逾時時最壞一輪要 36×3 秒）。
+                var rows = current.GetAllPortsStatus(12);
+
+                if (!IsDisposed && IsHandleCreated)
+                {
+                    BeginInvoke(new Action(() =>
+                    {
+                        if (pdu != current) return;   // 期間已斷線
+                        ApplyPduRows(grid, rows);
+                        pollLabel.Text = $"Auto-refresh every 3s · last update {DateTime.Now:HH:mm:ss}";
+                    }));
+                }
+            }
+            catch { /* 輪詢失敗忽略，下一輪再試 */ }
+            finally { System.Threading.Volatile.Write(ref polling, 0); }
+        }
+
+        connectBtn.Click += (_, _) =>
+        {
+            if (pdu != null)
+            {
+                StopPolling();
+                pdu.Dispose(); pdu = null;
+                statusLabel.Text = "Disconnected"; statusLabel.ForeColor = Theme.TextDim;
+                connectBtn.Text = "Connect";
+                pollLabel.Text = "";
+                // 斷線後清空表格，避免顯示過時的狀態
+                foreach (DataGridViewRow row in grid.Rows)
+                {
+                    row.Cells["Status"].Value = "—";
+                    row.Cells["Current"].Value = "—";
+                    row.Cells["Power"].Value = "—";
+                    row.Cells["Action"].Value = "—";
+                    row.DefaultCellStyle.BackColor = Theme.TabBack;
+                }
+                return;
+            }
+
+            var ip = ipBox.Text.Trim();
+            var p = new PduController(ip, AppLogger.Info, AppLogger.LogWarning);
+            if (p.CheckConnection())
+            {
+                pdu = p;
+                statusLabel.Text = $"Connected to {ip}";
+                statusLabel.ForeColor = Theme.SerialColor;
+                connectBtn.Text = "Disconnect";
+                // 立即讀一次，之後每 3 秒一次
+                timer = new System.Threading.Timer(_ => PollOnce(), null,
+                    dueTime: 0, period: 3000);
+            }
+            else
+            {
+                p.Dispose();
+                MessageBox.Show(this, $"Failed to connect to PDU at {ip}", "PDU", MessageBoxButtons.OK, MessageBoxIcon.Warning);
+            }
+        };
+
+        // 控制項銷毀時收掉計時器與連線
+        Disposed += (_, _) => { StopPolling(); pdu?.Dispose(); };
+
+        // 按下 Control 欄按鈕：切換該 Port 的 ON/OFF（SNMP Set 在背景執行，避免卡 UI）
+        grid.CellContentClick += (_, e) =>
+        {
+            if (e.RowIndex < 0 || e.ColumnIndex < 0) return;
+            if (grid.Columns[e.ColumnIndex].Name != "Action") return;
+
+            var current = pdu;
+            if (current == null)
+            {
+                MessageBox.Show(this, "PDU is not connected. Please connect first.",
+                    "PDU", MessageBoxButtons.OK, MessageBoxIcon.Warning);
+                return;
+            }
+
+            int port = e.RowIndex + 1;
+            var statusVal = grid.Rows[e.RowIndex].Cells["Status"].Value?.ToString();
+            if (statusVal != "ON" && statusVal != "OFF") return;   // 狀態未知時不動作
+            bool turnOn = statusVal != "ON";   // 目前 ON → 關；其餘 → 開
+
+            var actionCell = grid.Rows[e.RowIndex].Cells["Action"];
+            actionCell.Value = "…";
+
+            System.Threading.Tasks.Task.Run(() =>
+            {
+                bool ok = turnOn ? current.SetPortOn(port) : current.SetPortOff(port);
+                System.Threading.Thread.Sleep(400);   // 等 PDU 套用後再讀回確認
+                PollOnce();                            // 背景讀 SNMP 後 Invoke 回 UI 更新整張表
+
+                if (!ok && !IsDisposed && IsHandleCreated)
+                {
+                    BeginInvoke(new Action(() =>
+                        MessageBox.Show(this,
+                            $"Failed to turn {(turnOn ? "ON" : "OFF")} Port {port}",
+                            "PDU", MessageBoxButtons.OK, MessageBoxIcon.Error)));
+                }
+            });
+        };
+
+        page.Controls.Add(flow);
+        return page;
+    }
+
+    private static void ApplyPduRows(DataGridView grid, (bool? State, int? CurrentMilliAmps, double? PowerWatts)[] rows)
+    {
+        for (int i = 0; i < rows.Length && i < grid.Rows.Count; i++)
+        {
+            var (state, current, power) = rows[i];
+            var row = grid.Rows[i];
+            row.Cells["Status"].Value = state == true ? "ON" : state == false ? "OFF" : "—";
+            row.Cells["Current"].Value = current.HasValue ? $"{current.Value}" : "—";
+            row.Cells["Power"].Value = power.HasValue ? $"{power.Value:F1}" : "—";
+            // 按鈕文字代表「按下後會做的動作」：ON 時顯示 Turn OFF，反之亦然
+            row.Cells["Action"].Value = state == true ? "Turn OFF" : state == false ? "Turn ON" : "—";
+            row.DefaultCellStyle.BackColor = state == true ? Color.FromArgb(40, 80, 40) : state == false ? Color.FromArgb(60, 40, 40) : Theme.TabBack;
+        }
+    }
+
+    // ── Helpers ──
+    private static Button MakeButton(string text, Color borderColor)
+    {
+        var b = new Button
+        {
+            Text = text, AutoSize = true, AutoSizeMode = AutoSizeMode.GrowAndShrink,
+            MinimumSize = new Size(90, 28), 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.FlatAppearance.BorderColor = borderColor;
+        b.FlatAppearance.MouseOverBackColor = Theme.Hover;
+        return b;
+    }
+}
@@ -52,7 +52,8 @@ public sealed class WorkspaceView : UserControl
        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 };
+        // 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 };

        _toolbar = new FlowLayoutPanel
        {
@@ -374,7 +375,9 @@ public sealed class WorkspaceView : UserControl
    {
        var b = new Button
        {
-            Text = label, AutoSize = false, Size = new Size(44, 26), FlatStyle = FlatStyle.Flat,
+            Text = label, AutoSize = true, AutoSizeMode = AutoSizeMode.GrowAndShrink,
+            MinimumSize = new Size(40, 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
        };
@@ -384,11 +387,13 @@ public sealed class WorkspaceView : UserControl
        return b;
    }

-    private static Button MakeActionButton(string text, int width, int leftMargin, EventHandler onClick)
+    private static Button MakeActionButton(string text, int minWidth, int leftMargin, EventHandler onClick)
    {
        var b = new Button
        {
-            Text = text, AutoSize = false, Size = new Size(width, 26), FlatStyle = FlatStyle.Flat,
+            Text = text, AutoSize = true, AutoSizeMode = AutoSizeMode.GrowAndShrink,
+            MinimumSize = new Size(minWidth, 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
        };
@@ -447,22 +452,9 @@ public sealed class WorkspaceView : UserControl
            return;
        }

-        string content, name;
-        using (var dlg = new OpenFileDialog { Filter = "TTL scripts (*.ttl)|*.ttl|All files (*.*)|*.*" })
-        {
-            if (dlg.ShowDialog(this) != DialogResult.OK) return;
-            content = File.ReadAllText(dlg.FileName);
-            name = Path.GetFileName(dlg.FileName);
-        }
-
+        if (!TtlScript.TryPick(this, out var content, out var name)) return;
        // Run All 拒絕含 waitall / sendlnall 的腳本
-        if (ScriptContainsGroupCommands(content))
-        {
-            MessageBox.Show(this,
-                "Script contains 'waitall' or 'sendlnall' which require Group execution.\nPlease use Run Group buttons instead.",
-                "Run All", MessageBoxButtons.OK, MessageBoxIcon.Warning);
-            return;
-        }
+        if (TtlScript.WarnIfGroupCommands(this, content, "Run All")) return;

        await Task.WhenAll(serials.Select(sp => sp.RunScriptAsync(content, name)));
    }
@@ -481,29 +473,12 @@ public sealed class WorkspaceView : UserControl
            return;
        }

-        string content, name;
-        using (var dlg = new OpenFileDialog { Filter = "TTL scripts (*.ttl)|*.ttl|All files (*.*)|*.*" })
-        {
-            if (dlg.ShowDialog(this) != DialogResult.OK) return;
-            content = File.ReadAllText(dlg.FileName);
-            name = Path.GetFileName(dlg.FileName);
-        }
+        if (!TtlScript.TryPick(this, out var content, out var name)) return;

        var sync = new GroupSyncContext(members.Count);
        await Task.WhenAll(members.Select((sp, i) => sp.RunGroupScriptAsync(content, name, sync, ((char)('A' + i)).ToString())));
    }

-    private static bool ScriptContainsGroupCommands(string content)
-    {
-        foreach (var line in content.Split('\n'))
-        {
-            var t = line.Trim().ToLower();
-            if (t.StartsWith("waitall") || t.StartsWith("sendlnall") || t.StartsWith("sendlngroup"))
-                return true;
-        }
-        return false;
-    }
-
    protected override void Dispose(bool disposing)
    {
        if (disposing)
@@ -1,3 +1,4 @@
+using System.Globalization;
 using System.Text.Json;
 using Microsoft.Data.Sqlite;
 using ETTerms.Infrastructure;
@@ -59,7 +60,8 @@ public sealed class ConnectionStore
                Type = (ConnectionType)r.GetInt32(2),
                SortOrder = r.GetInt32(3),
                GroupName = r.IsDBNull(4) ? null : r.GetString(4),
-                LastUsedUtc = DateTime.Parse(r.GetString(5)),
+                // 與寫入端的 "o" (round-trip) 格式對稱，不受系統地區設定影響
+                LastUsedUtc = DateTime.Parse(r.GetString(5), CultureInfo.InvariantCulture, DateTimeStyles.RoundtripKind),
                Ssh = blob?.Ssh,
                Serial = blob?.Serial
            });
@@ -10,10 +10,13 @@
    <AssemblyName>ETTerms</AssemblyName>

    <!-- 版本資訊 -->
-    <Version>0.2.1</Version>
+    <Version>0.4.0</Version>
    <Product>ETTerms</Product>
    <Company>ETTerms Project</Company>

+    <!-- 高 DPI：PerMonitorV2，讓不同縮放比例的螢幕都能正確縮放、避免文字/按鈕被裁切 -->
+    <ApplicationHighDpiMode>PerMonitorV2</ApplicationHighDpiMode>
+
    <!-- 視窗 / 工作列 / exe 圖示 -->
    <ApplicationIcon>Assets\Choco_256x256.ico</ApplicationIcon>
  </PropertyGroup>
@@ -25,26 +28,33 @@

  <ItemGroup>
    <PackageReference Include="Microsoft.Data.Sqlite" Version="8.0.10" />
-    <PackageReference Include="SnmpSharpNet" Version="0.9.7">
-      <NoWarn>NU1701</NoWarn>
-    </PackageReference>
    <PackageReference Include="SSH.NET" Version="2024.2.0" />
    <PackageReference Include="System.IO.Ports" Version="8.0.0" />
  </ItemGroup>

+  <ItemGroup>
+    <!-- PDU SNMP 控制共用庫（GUI 與 ETTerms.PduMcp 共用，v0.4.0 取代兩份複製的 PduController） -->
+    <ProjectReference Include="..\ETTerms.PduCore\ETTerms.PduCore.csproj" />
+  </ItemGroup>
+
  <!--
-    發佈 GUI 時，自動把 Serial MCP server 一併發佈到 <publish>\ETTerms.SerialMcp\ 子資料夾。
+    發佈 GUI 時，自動把 MCP servers（Serial + PDU）一併發佈到 <publish>\<server>\ 子資料夾。
    這樣單一 `dotnet publish src\ETTerms` 就會產生完整自洽的 bundle，
-    且 McpRegistrar.ResolveServerExe() 解析的 <ETTerms.exe>\ETTerms.SerialMcp\ETTerms.SerialMcp.exe 必定存在。
+    且 McpRegistrar.ResolveServerExe() 解析的 <ETTerms.exe>\<server>\<server>.exe 必定存在。
    刻意放子資料夾：與 GUI 的相依 dll 隔離，避免互相覆蓋。
+    MCP 跟隨 GUI 的 self-contained 設定：框架相依版 → MCP 也框架相依；portable(self-contained)版 → MCP 也免 runtime。
  -->
-  <Target Name="PublishSerialMcp" AfterTargets="Publish">
+  <Target Name="PublishMcpServers" AfterTargets="Publish">
    <PropertyGroup>
      <_McpRid Condition="'$(RuntimeIdentifier)' != ''">$(RuntimeIdentifier)</_McpRid>
      <_McpRid Condition="'$(RuntimeIdentifier)' == ''">win-x64</_McpRid>
+      <_McpSelfContained Condition="'$(SelfContained)' != ''">$(SelfContained)</_McpSelfContained>
+      <_McpSelfContained Condition="'$(SelfContained)' == ''">false</_McpSelfContained>
    </PropertyGroup>
-    <Message Importance="high" Text="[ETTerms] Publishing ETTerms.SerialMcp -> $(PublishDir)ETTerms.SerialMcp" />
-    <Exec Command="dotnet publish &quot;$(MSBuildThisFileDirectory)..\ETTerms.SerialMcp\ETTerms.SerialMcp.csproj&quot; -c $(Configuration) -r $(_McpRid) --self-contained false -o &quot;$(PublishDir)ETTerms.SerialMcp&quot;" />
+    <Message Importance="high" Text="[ETTerms] Publishing ETTerms.SerialMcp -> $(PublishDir)ETTerms.SerialMcp (self-contained=$(_McpSelfContained))" />
+    <Exec Command="dotnet publish &quot;$(MSBuildThisFileDirectory)..\ETTerms.SerialMcp\ETTerms.SerialMcp.csproj&quot; -c $(Configuration) -r $(_McpRid) --self-contained $(_McpSelfContained) -o &quot;$(PublishDir)ETTerms.SerialMcp&quot;" />
+    <Message Importance="high" Text="[ETTerms] Publishing ETTerms.PduMcp -> $(PublishDir)ETTerms.PduMcp (self-contained=$(_McpSelfContained))" />
+    <Exec Command="dotnet publish &quot;$(MSBuildThisFileDirectory)..\ETTerms.PduMcp\ETTerms.PduMcp.csproj&quot; -c $(Configuration) -r $(_McpRid) --self-contained $(_McpSelfContained) -o &quot;$(PublishDir)ETTerms.PduMcp&quot;" />
  </Target>

 </Project>
@@ -8,16 +8,25 @@ namespace ETTerms.Infrastructure;
 public enum McpTarget { Claude, Kiro }

 /// <summary>
-/// 把 ETTerms 的 Serial MCP server（<c>ETTerms.SerialMcp</c>）一鍵註冊 / 移除到
-/// 各 AI CLI 的「使用者層級」MCP 設定檔。採 read-modify-write，保留檔內其他既有伺服器。
+/// 把 ETTerms 的 MCP servers（<c>ETTerms.SerialMcp</c> 與 <c>ETTerms.PduMcp</c>）一鍵註冊 /
+/// 移除到各 AI CLI 的「使用者層級」MCP 設定檔。採 read-modify-write，保留檔內其他既有伺服器。
 ///
 /// - Claude Code：<c>~/.claude.json</c> 頂層 <c>mcpServers</c>，entry 需 <c>type:"stdio"</c>。
 /// - Kiro：<c>%USERPROFILE%\.kiro\settings\mcp.json</c> 頂層 <c>mcpServers</c>。
+///
+/// 兩個 server 一起註冊 / 移除（一鍵同時設定 serial 與 pdu）。
 /// </summary>
 public static class McpRegistrar
 {
-    /// <summary>註冊到各 CLI 時用的 MCP server 名稱。</summary>
-    public const string ServerName = "etterms-serial";
+    /// <summary>一個可被註冊的 MCP server 描述：CLI 內名稱 + 發佈子資料夾 + 執行檔名。</summary>
+    public sealed record McpServer(string Name, string PublishFolder, string ExeName);
+
+    /// <summary>ETTerms 提供的所有 MCP servers。</summary>
+    public static readonly IReadOnlyList<McpServer> Servers = new[]
+    {
+        new McpServer("etterms-serial", "ETTerms.SerialMcp", "ETTerms.SerialMcp.exe"),
+        new McpServer("etterms-pdu",    "ETTerms.PduMcp",    "ETTerms.PduMcp.exe"),
+    };

    public static string DisplayName(McpTarget t) => t switch
    {
@@ -43,33 +52,33 @@ public static class McpRegistrar
    {
        McpTarget.Claude =>
            "claude mcp list\r\n" +
-            $"#  應看到：{ServerName}  ✓ Connected\r\n" +
-            $"#  細節：  claude mcp get {ServerName}",
+            "#  應看到：etterms-serial / etterms-pdu  ✓ Connected\r\n" +
+            "#  細節：  claude mcp get etterms-pdu",
        McpTarget.Kiro =>
            "kiro-cli mcp list\r\n" +
-            $"kiro-cli mcp status --name {ServerName}\r\n" +
+            "kiro-cli mcp status --name etterms-pdu\r\n" +
            "#  或在 Kiro IDE：點 ghost 圖示開 MCP Servers 面板查看狀態",
        _ => ""
    };

-    /// <summary>找出 ETTerms.SerialMcp 執行檔路徑（找不到回傳最可能的位置作為註冊值）。</summary>
-    public static string ResolveServerExe()
+    /// <summary>找出某個 MCP server 執行檔路徑（找不到回傳最可能的位置作為註冊值）。</summary>
+    public static string ResolveServerExe(McpServer server)
    {
        var baseDir = AppContext.BaseDirectory;
        var candidates = new List<string>
        {
-            Path.Combine(baseDir, "ETTerms.SerialMcp", "ETTerms.SerialMcp.exe"), // 發佈版（子資料夾）
-            Path.Combine(baseDir, "ETTerms.SerialMcp.exe"),                       // 同層
+            Path.Combine(baseDir, server.PublishFolder, server.ExeName), // 發佈版（子資料夾）
+            Path.Combine(baseDir, server.ExeName),                       // 同層
        };

-        // 開發版 fallback：src\ETTerms\bin\<cfg>\net8.0-windows → src\ETTerms.SerialMcp\bin\<cfg>\net8.0
+        // 開發版 fallback：src\ETTerms\bin\<cfg>\net8.0-windows → src\<folder>\bin\<cfg>\net8.0
        try
        {
            var binCfg = new DirectoryInfo(baseDir);          // ...\net8.0-windows
            var config = binCfg.Parent?.Name ?? "Debug";       // Debug / Release
            var srcDir = binCfg.Parent?.Parent?.Parent?.Parent; // ...\src
            if (srcDir != null)
-                candidates.Add(Path.Combine(srcDir.FullName, "ETTerms.SerialMcp", "bin", config, "net8.0", "ETTerms.SerialMcp.exe"));
+                candidates.Add(Path.Combine(srcDir.FullName, server.PublishFolder, "bin", config, "net8.0", server.ExeName));
        }
        catch { /* 路徑推導失敗就略過開發版 fallback */ }

@@ -78,22 +87,34 @@ public static class McpRegistrar
        return candidates[0]; // 都找不到 → 回發佈版預期位置
    }

-    public static bool ServerExeExists() => File.Exists(ResolveServerExe());
+    /// <summary>所有 server 執行檔是否都存在。</summary>
+    public static bool ServerExeExists() => Servers.All(s => File.Exists(ResolveServerExe(s)));

-    /// <summary>該目標是否已註冊 etterms-serial。</summary>
+    /// <summary>列出每個 server 的解析路徑與是否存在（給 UI 顯示）。</summary>
+    public static IEnumerable<(string Name, string Exe, bool Exists)> ServerInfos()
+    {
+        foreach (var s in Servers)
+        {
+            var exe = ResolveServerExe(s);
+            yield return (s.Name, exe, File.Exists(exe));
+        }
+    }
+
+    /// <summary>該目標是否已註冊「全部」ETTerms MCP servers。</summary>
    public static bool IsRegistered(McpTarget t)
    {
        try
        {
            var path = ConfigPath(t);
            if (!File.Exists(path)) return false;
-            var root = JsonNode.Parse(File.ReadAllText(path)) as JsonObject;
-            return (root?["mcpServers"] as JsonObject)?[ServerName] != null;
+            var servers = (JsonNode.Parse(File.ReadAllText(path)) as JsonObject)?["mcpServers"] as JsonObject;
+            if (servers == null) return false;
+            return Servers.All(s => servers[s.Name] != null);
        }
        catch { return false; }
    }

-    /// <summary>註冊（或更新）etterms-serial 到該目標設定檔。</summary>
+    /// <summary>註冊（或更新）所有 ETTerms MCP servers 到該目標設定檔。</summary>
    public static void Register(McpTarget t)
    {
        var path = ConfigPath(t);
@@ -106,27 +127,34 @@ public static class McpRegistrar
            servers = new JsonObject();
            root["mcpServers"] = servers;
        }
-        servers[ServerName] = BuildEntry(t);
+        foreach (var s in Servers)
+            servers[s.Name] = BuildEntry(t, s);
        WriteRoot(path, root);
        AppLogger.Info($"MCP registered to {DisplayName(t)} at {path}");
    }

-    /// <summary>從該目標設定檔移除 etterms-serial。</summary>
+    /// <summary>從該目標設定檔移除所有 ETTerms MCP servers。</summary>
    public static void Unregister(McpTarget t)
    {
        var path = ConfigPath(t);
        if (!File.Exists(path)) return;
        var root = LoadRoot(path);
-        if (root["mcpServers"] is JsonObject servers && servers.Remove(ServerName))
+        if (root["mcpServers"] is JsonObject servers)
        {
-            WriteRoot(path, root);
-            AppLogger.Info($"MCP unregistered from {DisplayName(t)} at {path}");
+            bool changed = false;
+            foreach (var s in Servers)
+                changed |= servers.Remove(s.Name);
+            if (changed)
+            {
+                WriteRoot(path, root);
+                AppLogger.Info($"MCP unregistered from {DisplayName(t)} at {path}");
+            }
        }
    }

-    private static JsonObject BuildEntry(McpTarget t)
+    private static JsonObject BuildEntry(McpTarget t, McpServer server)
    {
-        var exe = ResolveServerExe();
+        var exe = ResolveServerExe(server);
        return t switch
        {
            // Claude Code：stdio server 需 type 欄位
@@ -23,6 +23,7 @@ public sealed class SessionLogger : IDisposable
    private readonly object _lock = new();
    private readonly StreamWriter _writer;
    private readonly StringBuilder _pending = new();
+    private readonly Decoder _decoder = Encoding.UTF8.GetDecoder();   // stateful：多位元組字元跨 chunk 不會解成亂碼
    private bool _disposed;

    /// <summary>實際寫入的完整檔案路徑。</summary>
@@ -52,13 +53,15 @@ public sealed class SessionLogger : IDisposable
    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;
+            var chars = new char[data.Length];
+            int n = _decoder.GetChars(data, 0, data.Length, chars, 0);
+            if (n == 0) return;
+            string clean = AnsiRegex.Replace(new string(chars, 0, n), "").Replace("\r", "");
+            if (clean.Length == 0) return;
            string stamp = $"[{DateTime.Now:yyyy-MM-dd HH:mm:ss.fff}] ";
            int start = 0;
            for (int i = 0; i < clean.Length; i++)
@@ -1,76 +0,0 @@
-using System.Net;
-using ETTerms.Infrastructure;
-using SnmpSharpNet;
-
-namespace ETTerms.Scripting.Pdu;
-
-/// <summary>
-/// PDU Controller for iPoMan II/III models via SNMP.
-/// Ported from MyTeraTerm's PDUControlLib.
-/// </summary>
-public sealed class PduController : IDisposable
-{
-    private readonly string _ip;
-    private const string Community = "private";
-    private const int SnmpPort = 161;
-    private const int Timeout = 3000;
-
-    public PduController(string ip) => _ip = ip;
-
-    public bool CheckConnection()
-    {
-        var name = SnmpGet(".1.3.6.1.4.1.2468.1.4.2.1.1.4");
-        AppLogger.Info($"[PDU] CheckConnection {_ip}: name='{name ?? "<null>"}'");
-        return !string.IsNullOrEmpty(name) && name.Contains("PDU");
-    }
-
-    public bool SetPortOn(int port) => SnmpSet(PortControlOid(port), new Integer32(3));
-    public bool SetPortOff(int port) => SnmpSet(PortControlOid(port), new Integer32(4));
-
-    public bool? GetPortState(int port)
-    {
-        var r = SnmpGet(PortStateOid(port));
-        return r == "3" ? true : (r == "2" || r == "4") ? false : null;
-    }
-
-    public int? GetPortCurrent(int port) => int.TryParse(SnmpGet(PortCurrentOid(port)), out int v) ? v : null;
-    public double? GetPortPowerWatts(int port) => int.TryParse(SnmpGet(PortPowerOid(port)), out int v) ? v / 10.0 : null;
-
-    private static string PortControlOid(int port) => $".1.3.6.1.4.1.2468.1.4.2.1.3.2.4.1.2.{port}";
-    private static string PortStateOid(int port) => $".1.3.6.1.4.1.2468.1.4.2.1.3.2.3.1.2.{port}";
-    private static string PortCurrentOid(int port) => $".1.3.6.1.4.1.2468.1.4.2.1.3.2.3.1.3.{port}";
-    private static string PortPowerOid(int port) => $".1.3.6.1.4.1.2468.1.4.2.1.3.2.3.1.5.{port}";
-
-    private bool SnmpSet(string oid, AsnType value)
-    {
-        try
-        {
-            var param = new AgentParameters(new OctetString(Community)) { Version = SnmpVersion.Ver1 };
-            using var target = new UdpTarget((IPAddress)new IpAddress(_ip), SnmpPort, Timeout, 1);
-            var pdu = new SnmpSharpNet.Pdu(PduType.Set);
-            pdu.VbList.Add(new Oid(oid), value);
-            var result = (SnmpV1Packet)target.Request(pdu, param);
-            return result?.Pdu.ErrorStatus == 0;
-        }
-        catch { return false; }
-    }
-
-    private string? SnmpGet(string oid)
-    {
-        try
-        {
-            var param = new AgentParameters(new OctetString(Community)) { Version = SnmpVersion.Ver1 };
-            using var target = new UdpTarget((IPAddress)new IpAddress(_ip), SnmpPort, Timeout, 1);
-            var pdu = new SnmpSharpNet.Pdu(PduType.Get);
-            pdu.VbList.Add(new Oid(oid));
-            var result = (SnmpV1Packet)target.Request(pdu, param);
-            if (result == null) { AppLogger.LogWarning($"[PDU] SNMP GET {oid}: no response (timeout)"); return null; }
-            if (result.Pdu.ErrorStatus != 0) { AppLogger.LogWarning($"[PDU] SNMP GET {oid}: ErrorStatus={result.Pdu.ErrorStatus}"); return null; }
-            foreach (var v in result.Pdu.VbList) return v.Value.ToString();
-        }
-        catch (Exception ex) { AppLogger.LogError($"[PDU] SNMP GET {oid} exception", ex); }
-        return null;
-    }
-
-    public void Dispose() { }
-}
@@ -22,39 +22,14 @@ public sealed class ScriptRunner

    public bool IsRunning { get; private set; }

-    public async Task RunAsync(string content, string fileName, ISessionChannel channel)
-    {
-        if (IsRunning) return;
-        IsRunning = true;
+    public Task RunAsync(string content, string fileName, ISessionChannel channel)
+        => RunCoreAsync(content, fileName, channel, null, "");

-        var interp = new TTLInterpreter(channel);
-        interp.StatusChanged += (f, l, c) => StatusChanged?.Invoke(f, l, c);
-        interp.Output += m => Output?.Invoke(m);
-        _interp = interp;
+    public Task RunGroupAsync(string content, string fileName, ISessionChannel channel, GroupSyncContext sync, string memberLabel = "")
+        => RunCoreAsync(content, fileName, channel, sync, memberLabel);

-        try
-        {
-            await Task.Run(() => interp.ExecuteScriptContent(content, fileName));
-            Finished?.Invoke(true, "Completed");
-        }
-        catch (OperationCanceledException)
-        {
-            Finished?.Invoke(false, "Cancelled");
-        }
-        catch (Exception ex)
-        {
-            Output?.Invoke($"[error] {ex.Message}");
-            Finished?.Invoke(false, ex.Message);
-        }
-        finally
-        {
-            interp.Dispose();
-            _interp = null;
-            IsRunning = false;
-        }
-    }
-
-    public async Task RunGroupAsync(string content, string fileName, ISessionChannel channel, GroupSyncContext sync, string memberLabel = "")
+    private async Task RunCoreAsync(string content, string fileName, ISessionChannel channel,
+        GroupSyncContext? sync, string memberLabel)
    {
        if (IsRunning) return;
        IsRunning = true;
@@ -1,7 +1,8 @@
 using System.Globalization;
 using System.Text;
 using System.Text.RegularExpressions;
-using ETTerms.Scripting.Pdu;
+using ETTerms.Infrastructure;
+using ETTerms.PduCore;
 using ETTerms.Sessions;

 namespace ETTerms.Scripting;
@@ -17,11 +18,13 @@ public sealed class TTLInterpreter : IDisposable
 {
    private readonly ISessionChannel _channel;
    private readonly Encoding _enc = new UTF8Encoding(false);
+    private readonly Decoder _rxDecoder = Encoding.UTF8.GetDecoder();   // stateful：多位元組字元跨 chunk 不會解成亂碼
    private readonly Dictionary<string, object> _vars = new();
    private readonly StringBuilder _recv = new();
    private readonly CancellationTokenSource _cts = new();

    private const int SettleMs = 300;   // wait 命中關鍵字後，需連續安靜這麼久（無新資料）才接受，避免比對到輸出中途的回顯
+    private const int MaxRecvChars = 1_000_000;   // _recv 上限：長時間無 wait 消費時避免無限成長

    private GroupSyncContext? _groupSync;
    private string _groupMemberLabel = "";
@@ -51,7 +54,13 @@ public sealed class TTLInterpreter : IDisposable

    private void OnData(byte[] data)
    {
-        lock (_recv) _recv.Append(_enc.GetString(data));
+        lock (_recv)
+        {
+            var chars = new char[data.Length];
+            int n = _rxDecoder.GetChars(data, 0, data.Length, chars, 0);
+            _recv.Append(chars, 0, n);
+            if (_recv.Length > MaxRecvChars) _recv.Remove(0, _recv.Length - MaxRecvChars);
+        }
    }

    #region Script Execution
@@ -350,11 +359,19 @@ public sealed class TTLInterpreter : IDisposable
        _logWriter?.WriteLine($"[Wait] {text}");

        int elapsed = 0;
+        int lastLen = -1;   // buffer 長度沒變就不重掃（避免每 100ms 全量 ToString+IndexOf）
        while (true)
        {
            ThrowIfCancelled();
-            bool found;
-            lock (_recv) found = _recv.ToString().IndexOf(text, StringComparison.Ordinal) >= 0;
+            bool found = false;
+            lock (_recv)
+            {
+                if (_recv.Length != lastLen)
+                {
+                    lastLen = _recv.Length;
+                    found = _recv.ToString().IndexOf(text, StringComparison.Ordinal) >= 0;
+                }
+            }
            if (found && SettleAndConsume(text)) return;

            // 只有在明確設定 timeout(>0) 且超時才中止腳本；否則一直等到關鍵字出現或被取消。
@@ -503,7 +520,7 @@ public sealed class TTLInterpreter : IDisposable
        if (parts.Length != 2) { Output?.Invoke("[pduconnect] syntax: pduconnect <device> <ip>"); _result = 0; return; }
        int device = ParseIntDirect(parts[0]);
        string ip = parts[1].Trim('\'', '"');
-        var pdu = new PduController(ip);
+        var pdu = new PduController(ip, AppLogger.Info, AppLogger.LogWarning);
        if (pdu.CheckConnection())
        {
            _pdus[device] = pdu;
@@ -0,0 +1,44 @@
+using System.Windows.Forms;
+
+namespace ETTerms.Scripting;
+
+/// <summary>
+/// TTL 腳本檔的共用小工具：選檔載入與 group 指令檢查。
+/// SessionPage（▶ Script）與 WorkspaceView（Run All / Run Group）共用，避免三份重複流程。
+/// </summary>
+public static class TtlScript
+{
+    /// <summary>跳出選檔對話框並讀入腳本內容。使用者取消回傳 false。</summary>
+    public static bool TryPick(IWin32Window owner, out string content, out string fileName)
+    {
+        content = "";
+        fileName = "";
+        using var dlg = new OpenFileDialog { Filter = "TTL scripts (*.ttl)|*.ttl|All files (*.*)|*.*" };
+        if (dlg.ShowDialog(owner) != DialogResult.OK) return false;
+        content = File.ReadAllText(dlg.FileName);
+        fileName = Path.GetFileName(dlg.FileName);
+        return true;
+    }
+
+    /// <summary>腳本是否含只能在 Run Group 模式使用的同步指令（waitall / sendlnall / sendlngroup）。</summary>
+    public static bool ContainsGroupCommands(string content)
+    {
+        foreach (var line in content.Split('\n'))
+        {
+            var t = line.Trim().ToLower();
+            if (t.StartsWith("waitall") || t.StartsWith("sendlnall") || t.StartsWith("sendlngroup"))
+                return true;
+        }
+        return false;
+    }
+
+    /// <summary>含 group 指令時警告並回傳 true（呼叫端應中止，改用 Run Group）。</summary>
+    public static bool WarnIfGroupCommands(IWin32Window owner, string content, string caption)
+    {
+        if (!ContainsGroupCommands(content)) return false;
+        MessageBox.Show(owner,
+            "Script contains 'waitall' or 'sendlnall' which require Group execution.\nPlease use Run Group buttons instead.",
+            caption, MessageBoxButtons.OK, MessageBoxIcon.Warning);
+        return true;
+    }
+}
@@ -69,13 +69,28 @@ public sealed class SerialBridgeServer : IDisposable
                            Send(new { sessions = SerialBridge.All.Select(e => new { name = e.Name, baud = e.BaudRate }) });
                            break;
                        case "attach":
+                        {
                            Detach();
                            attached = SerialBridge.Find(req.session ?? "");
                            if (attached == null) { Send(new { ok = false, error = $"no open serial session '{req.session}' in GUI" }); break; }
-                            rx = data => Send(new { op = "rx", data = Encoding.UTF8.GetString(data) });
+                            // stateful Decoder：UTF-8 多位元組字元跨 chunk 邊界時不會解成亂碼
+                            var dec = Encoding.UTF8.GetDecoder();
+                            var decLock = new object();
+                            rx = data =>
+                            {
+                                string s;
+                                lock (decLock)
+                                {
+                                    var chars = new char[data.Length];
+                                    int n = dec.GetChars(data, 0, data.Length, chars, 0);
+                                    s = new string(chars, 0, n);
+                                }
+                                if (s.Length > 0) Send(new { op = "rx", data = s });
+                            };
                            attached.Rx += rx;
                            Send(new { ok = true, name = attached.Name });
                            break;
+                        }
                        case "write":
                            if (attached == null) { Send(new { ok = false, error = "not attached" }); break; }
                            attached.Write(req.data ?? "", req.newline);
@@ -100,20 +100,8 @@ public sealed class SessionPage : UserControl

    private async void OnRunScript(object? sender, EventArgs e)
    {
-        string content, name;
-        using (var dlg = new OpenFileDialog { Filter = "TTL scripts (*.ttl)|*.ttl|All files (*.*)|*.*" })
-        {
-            if (dlg.ShowDialog(this) != DialogResult.OK) return;
-            content = File.ReadAllText(dlg.FileName);
-            name = Path.GetFileName(dlg.FileName);
-        }
-        if (ContainsGroupCommands(content))
-        {
-            MessageBox.Show(this,
-                "Script contains 'waitall' or 'sendlnall' which require Group execution.\nPlease use Run Group buttons instead.",
-                "Script", MessageBoxButtons.OK, MessageBoxIcon.Warning);
-            return;
-        }
+        if (!TtlScript.TryPick(this, out var content, out var name)) return;
+        if (TtlScript.WarnIfGroupCommands(this, content, "Script")) return;
        SetRunning(true);
        await _runner.RunAsync(content, name, _channel);
    }
@@ -168,17 +156,6 @@ public sealed class SessionPage : UserControl
        _log.FlatAppearance.BorderColor = on ? Theme.SerialColor : Theme.Border;
    }

-    private static bool ContainsGroupCommands(string content)
-    {
-        foreach (var line in content.Split('\n'))
-        {
-            var t = line.Trim().ToLower();
-            if (t.StartsWith("waitall") || t.StartsWith("sendlnall") || t.StartsWith("sendlngroup"))
-                return true;
-        }
-        return false;
-    }
-
    private void SetRunning(bool running)
    {
        _run.Enabled = !running;
@@ -66,17 +66,32 @@ public sealed class ShellChannel : ISessionChannel
        UpdateProcThreadAttribute(si.lpAttributeList, 0, (IntPtr)0x00020016 /* PROC_THREAD_ATTRIBUTE_PSEUDOCONSOLE */,
            _ptyHandle, IntPtr.Size, IntPtr.Zero, IntPtr.Zero);

-        string workDir = string.IsNullOrWhiteSpace(_settings.StartupDirectory)
-            ? Environment.GetFolderPath(Environment.SpecialFolder.UserProfile)
-            : _settings.StartupDirectory;
+        // 啟動目錄：若未設定或該目錄已不存在（例如外接碟拔除、資料夾被刪），
+        // 一律退回目前使用者的家目錄（C:\Users\<user>），避免 CreateProcess 失敗 267 (ERROR_DIRECTORY)。
+        string configured = _settings.StartupDirectory;
+        string workDir = (!string.IsNullOrWhiteSpace(configured) && Directory.Exists(configured))
+            ? configured
+            : Environment.GetFolderPath(Environment.SpecialFolder.UserProfile);

-        bool ok = CreateProcess(null, $"{exe} {args}".TrimEnd(), IntPtr.Zero, IntPtr.Zero, false,
-            0x00080000 /* EXTENDED_STARTUPINFO_PRESENT */, IntPtr.Zero, workDir, ref si, out var pi);
+        bool ok;
+        PROCESS_INFORMATION pi;
+        try
+        {
+            ok = CreateProcess(null, $"{exe} {args}".TrimEnd(), IntPtr.Zero, IntPtr.Zero, false,
+                0x00080000 /* EXTENDED_STARTUPINFO_PRESENT */, IntPtr.Zero, workDir, ref si, out pi);
+        }
+        finally
+        {
+            // attribute list 在 CreateProcess 返回後即可釋放（文件保證），不釋放會每開一個 shell 漏一次
+            DeleteProcThreadAttributeList(si.lpAttributeList);
+            Marshal.FreeHGlobal(si.lpAttributeList);
+        }

        if (!ok) throw new Exception($"CreateProcess failed: {Marshal.GetLastWin32Error()}");

        CloseHandle(pi.hThread);
        _proc = Process.GetProcessById(pi.dwProcessId);
+        CloseHandle(pi.hProcess);   // 之後都經由 _proc 操作，raw handle 不留（避免 handle 洩漏）

        // Start reader thread
        _reader = new Thread(ReadLoop) { IsBackground = true, Name = "ConPTY-Reader" };
@@ -98,7 +113,12 @@ public sealed class ShellChannel : ISessionChannel
                DataReceived?.Invoke(data);
            }
        }
-        catch when (_closed) { }
+        catch { /* 使用者關閉或 ConPTY 收掉都會走到這，不可讓例外殺掉行程 */ }
+
+        // shell 自己 exit（非使用者關分頁）時給個明確提示，分頁才不會看起來像死掉
+        if (!_closed)
+            DataReceived?.Invoke(Encoding.UTF8.GetBytes(
+                "\r\n\x1b[90m[ETTerms] shell process exited\x1b[0m\r\n"));
    }

    public void Write(byte[] data)
@@ -173,6 +193,9 @@ public sealed class ShellChannel : ISessionChannel
    [DllImport("kernel32.dll", SetLastError = true)]
    private static extern bool UpdateProcThreadAttribute(IntPtr lpAttributeList, uint dwFlags, IntPtr Attribute, IntPtr lpValue, IntPtr cbSize, IntPtr lpPreviousValue, IntPtr lpReturnSize);

+    [DllImport("kernel32.dll")]
+    private static extern void DeleteProcThreadAttributeList(IntPtr lpAttributeList);
+
    [DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]
    private static extern bool CreateProcess(string? lpApplicationName, string lpCommandLine, IntPtr lpProcessAttributes, IntPtr lpThreadAttributes, bool bInheritHandles, uint dwCreationFlags, IntPtr lpEnvironment, string lpCurrentDirectory, ref STARTUPINFOEX lpStartupInfo, out PROCESS_INFORMATION lpProcessInformation);

@@ -40,9 +40,22 @@ public sealed class SshChannel : ISessionChannel
            var ci = BuildConnectionInfo();
            _client = new SshClient(ci);
            _client.HostKeyReceived += OnHostKey;
+            // 斷線 / 錯誤要讓使用者看得到，否則只會覺得「打字沒反應」
+            _client.ErrorOccurred += (_, e) =>
+            {
+                if (_closed) return;
+                Emit($"\r\n\x1b[90m[SSH error] {e.Exception.Message}\x1b[0m\r\n");
+                AppLogger.LogWarning($"SSH error {_ssh.Host}: {e.Exception.Message}");
+            };
            _client.Connect();
            _shell = _client.CreateShellStream("xterm-256color", (uint)_cols, (uint)_rows, 0, 0, 4096);
            _shell.DataReceived += (_, e) => DataReceived?.Invoke(e.Data);
+            _shell.Closed += (_, _) =>
+            {
+                if (_closed) return;
+                Emit("\r\n\x1b[90m[SSH] connection closed by remote host\x1b[0m\r\n");
+                AppLogger.Info($"SSH shell closed: {_ssh.Host}");
+            };
            AppLogger.Info($"SSH connected: {_ssh.Username}@{_ssh.Host}:{_ssh.Port}");
        }
        catch (Exception ex)
@@ -102,8 +115,15 @@ public sealed class SshChannel : ISessionChannel
    public void Write(byte[] data)
    {
        if (_shell == null) return;
-        _shell.Write(data, 0, data.Length);
-        _shell.Flush();
+        try
+        {
+            _shell.Write(data, 0, data.Length);
+            _shell.Flush();
+        }
+        catch (Exception ex)   // 連線已斷時從 UI thread 寫入不可讓例外炸掉視窗
+        {
+            if (!_closed) Emit($"\r\n\x1b[90m[SSH] write failed: {ex.Message}\x1b[0m\r\n");
+        }
    }

    public void Resize(int cols, int rows)
@@ -19,6 +19,14 @@ public sealed class AnsiParser
    /// <summary>DECCKM：application cursor keys（影響方向鍵送出序列）。</summary>
    public bool AppCursorKeys { get; private set; }

+    /// <summary>DEC mode 2004：bracketed paste。啟用時貼上內容須以 ESC[200~ / ESC[201~ 包夾，
+    /// 讓 PSReadLine / Kiro CLI 等把多行貼上視為單一輸入而非逐行立即送出。</summary>
+    public bool BracketedPaste { get; private set; }
+
+    /// <summary>對查詢序列（DSR ESC[5n/6n、DA ESC[c）的回覆，須回送給遠端。
+    /// vim 等 TUI 會查游標位置，收不到回覆可能卡住或排版錯亂。</summary>
+    public event Action<byte[]>? Response;
+
    public AnsiParser(ScreenBuffer buffer) => _b = buffer;

    public void Feed(byte[] data)
@@ -126,9 +134,20 @@ public sealed class AnsiParser
            case 'h': SetMode(p, true); break;
            case 'l': SetMode(p, false); break;
            case 'm': Sgr(p); break;
+            case 'n': if (!_priv) DeviceStatusReport(p); break;
+            case 'c': if (!_priv) Respond("\x1b[?1;2c"); break;   // DA：VT100 with AVO
        }
    }

+    private void DeviceStatusReport(int[] p)
+    {
+        int code = p.Length > 0 ? p[0] : 0;
+        if (code == 5) Respond("\x1b[0n");                                          // 裝置 OK
+        else if (code == 6) Respond($"\x1b[{_b.CursorRow + 1};{_b.CursorCol + 1}R"); // 游標位置（1-based）
+    }
+
+    private void Respond(string seq) => Response?.Invoke(Encoding.ASCII.GetBytes(seq));
+
    private void SetMode(int[] p, bool set)
    {
        if (!_priv) return;
@@ -138,6 +157,7 @@ public sealed class AnsiParser
                case 25: _b.CursorVisible = set; break;
                case 7: _b.AutoWrap = set; break;
                case 1: AppCursorKeys = set; break;
+                case 2004: BracketedPaste = set; break;
                case 47: case 1047: case 1049:
                    if (set) _b.EnterAlt(); else _b.ExitAlt(); break;
            }
@@ -0,0 +1,166 @@
+using System.Drawing;
+using System.Drawing.Drawing2D;
+using System.Windows.Forms;
+
+namespace ETTerms.Terminal;
+
+/// <summary>
+/// 自繪深色垂直捲軸：細長、無箭頭按鈕、圓角滑塊，配合終端機深色主題。
+/// API（Minimum / Maximum / Value / LargeChange / SmallChange / Scroll）對齊 <see cref="VScrollBar"/>，
+/// 方便直接替換。<see cref="Scroll"/> 只在「使用者操作」造成值變動時觸發（程式設定 Value 不觸發）。
+/// </summary>
+public sealed class DarkScrollBar : Control
+{
+    public int Minimum { get; set; } = 0;
+    public int Maximum { get; set; } = 0;
+    public int LargeChange { get; set; } = 1;
+    public int SmallChange { get; set; } = 1;
+
+    private int _value;
+    public int Value
+    {
+        get => _value;
+        set { int v = Clamp(value); if (v != _value) { _value = v; Invalidate(); } }
+    }
+
+    /// <summary>使用者拖曳 / 點軌道 / 滾輪造成值變動時觸發。</summary>
+    public event EventHandler? Scroll;
+
+    // 配色（KKTerm 深色）
+    private static readonly Color TrackColor = Color.FromArgb(24, 24, 28);
+    private static readonly Color ThumbColor = Color.FromArgb(70, 70, 82);
+    private static readonly Color ThumbHover = Color.FromArgb(100, 100, 118);
+    private static readonly Color ThumbDrag = Color.FromArgb(130, 130, 152);
+
+    private bool _hover, _dragging;
+    private int _dragOffset;
+
+    public DarkScrollBar()
+    {
+        SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint
+               | ControlStyles.OptimizedDoubleBuffer | ControlStyles.ResizeRedraw, true);
+        // 純滑鼠操作的捲軸，無任何鍵盤邏輯，絕不可吃鍵盤焦點：否則身為唯一可選取子控制項，
+        // 在 scrollback 出現（Enabled=true）後，視窗切走再切回時 WinForms 會把焦點還原到它身上，
+        // 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;
+        BackColor = TrackColor;
+    }
+
+    // ── 數值範圍工具 ─────────────────────────────────────────
+    /// <summary>可達的最大 Value（與 VScrollBar 相同：Maximum - LargeChange + 1）。</summary>
+    private int MaxValue => Math.Max(Minimum, Maximum - LargeChange + 1);
+    private int Clamp(int v) => Math.Clamp(v, Minimum, MaxValue);
+    private bool Scrollable => Enabled && MaxValue > Minimum;
+
+    // ── 滑塊幾何 ─────────────────────────────────────────────
+    private const int MinThumb = 24;
+    private const int Pad = 2;
+
+    private int TrackHeight => Math.Max(1, Height - Pad * 2);
+
+    private int ThumbHeight()
+    {
+        int total = Maximum - Minimum + 1;
+        if (total <= 0) return TrackHeight;
+        int h = (int)((long)TrackHeight * LargeChange / total);
+        return Math.Clamp(h, MinThumb, TrackHeight);
+    }
+
+    private int ThumbTop()
+    {
+        int range = MaxValue - Minimum;
+        if (range <= 0) return Pad;
+        int travel = TrackHeight - ThumbHeight();
+        return Pad + (int)((long)travel * (_value - Minimum) / range);
+    }
+
+    private Rectangle ThumbRect() => new(Pad, ThumbTop(), Math.Max(1, Width - Pad * 2), ThumbHeight());
+
+    // ── 繪製 ─────────────────────────────────────────────────
+    protected override void OnPaint(PaintEventArgs e)
+    {
+        var g = e.Graphics;
+        g.Clear(TrackColor);
+        if (!Scrollable) return;          // 不可捲動時只畫底色（與停用態一致）
+
+        g.SmoothingMode = SmoothingMode.AntiAlias;
+        var r = ThumbRect();
+        var color = _dragging ? ThumbDrag : _hover ? ThumbHover : ThumbColor;
+        int radius = Math.Min(r.Width, 6);
+        using var path = RoundedRect(r, radius);
+        using var b = new SolidBrush(color);
+        g.FillPath(b, path);
+    }
+
+    private static GraphicsPath RoundedRect(Rectangle r, int radius)
+    {
+        int d = radius * 2;
+        var p = new GraphicsPath();
+        if (d <= 0 || d > r.Width || d > r.Height) { p.AddRectangle(r); return p; }
+        p.AddArc(r.X, r.Y, d, d, 180, 90);
+        p.AddArc(r.Right - d, r.Y, d, d, 270, 90);
+        p.AddArc(r.Right - d, r.Bottom - d, d, d, 0, 90);
+        p.AddArc(r.X, r.Bottom - d, d, d, 90, 90);
+        p.CloseFigure();
+        return p;
+    }
+
+    // ── 滑鼠互動 ─────────────────────────────────────────────
+    protected override void OnMouseDown(MouseEventArgs e)
+    {
+        if (e.Button != MouseButtons.Left || !Scrollable) return;
+        var thumb = ThumbRect();
+        if (thumb.Contains(e.Location))
+        {
+            _dragging = true;
+            _dragOffset = e.Y - thumb.Top;
+        }
+        else
+        {
+            // 點軌道：往點擊方向翻一頁
+            SetValueFromUser(e.Y < thumb.Top ? _value - LargeChange : _value + LargeChange);
+        }
+        Invalidate();
+    }
+
+    protected override void OnMouseMove(MouseEventArgs e)
+    {
+        bool over = ThumbRect().Contains(e.Location);
+        if (over != _hover) { _hover = over; Invalidate(); }
+
+        if (!_dragging) return;
+        int travel = TrackHeight - ThumbHeight();
+        if (travel <= 0) return;
+        int range = MaxValue - Minimum;
+        int y = Math.Clamp(e.Y - _dragOffset - Pad, 0, travel);
+        SetValueFromUser(Minimum + (int)((long)y * range / travel));
+    }
+
+    protected override void OnMouseUp(MouseEventArgs e)
+    {
+        if (_dragging) { _dragging = false; Invalidate(); }
+    }
+
+    protected override void OnMouseLeave(EventArgs e)
+    {
+        if (_hover) { _hover = false; Invalidate(); }
+    }
+
+    protected override void OnMouseWheel(MouseEventArgs e)
+    {
+        if (!Scrollable) return;
+        int step = e.Delta / 120 * SmallChange * 3;
+        SetValueFromUser(_value - step);
+    }
+
+    private void SetValueFromUser(int v)
+    {
+        int nv = Clamp(v);
+        if (nv == _value) return;
+        _value = nv;
+        Invalidate();
+        Scroll?.Invoke(this, EventArgs.Empty);
+    }
+}
@@ -33,8 +33,11 @@ public sealed class ScreenBuffer
    public bool AutoWrap = true;

    private Cell[][] _screen;
-    private readonly List<Cell[]> _scrollback = new();
-    private readonly int _maxScroll;
+    // scrollback 用環形緩衝：滿了以後 push/丟舊行都是 O(1)。
+    // （原本 List + RemoveRange(0,…) 在 buffer 滿時每推一行就整串搬移，大量輸出會愈跑愈卡。）
+    private readonly Cell[]?[] _sb;
+    private int _sbHead;                 // 最舊一行的位置
+    private int _sbCount;
    private int _top, _bottom;           // 滾動區（含）
    private bool _wrapPending;

@@ -49,15 +52,15 @@ public sealed class ScreenBuffer
    {
        Cols = Math.Max(1, cols); Rows = Math.Max(1, rows);
        DefaultFg = fg; DefaultBg = bg; PenFg = fg; PenBg = bg;
-        _maxScroll = maxScrollback;
+        _sb = new Cell[Math.Max(0, maxScrollback)][];
        _screen = NewGrid(Rows, Cols);
        _top = 0; _bottom = Rows - 1;
    }

    // ── 給 TerminalView 讀取 ─────────────────────────────────
-    public int ScrollbackCount => _scrollback.Count;
-    public int TotalRows => _scrollback.Count + Rows;
-    public Cell[] LineAt(int abs) => abs < _scrollback.Count ? _scrollback[abs] : _screen[abs - _scrollback.Count];
+    public int ScrollbackCount => _sbCount;
+    public int TotalRows => _sbCount + Rows;
+    public Cell[] LineAt(int abs) => abs < _sbCount ? _sb[(_sbHead + abs) % _sb.Length]! : _screen[abs - _sbCount];

    // ── 內部建構工具 ─────────────────────────────────────────
    private Cell BlankPen() => new() { Ch = ' ', Fg = PenFg, Bg = PenBg, Attr = CellAttr.None };
@@ -73,8 +76,9 @@ public sealed class ScreenBuffer

    private void PushScroll(Cell[] line)
    {
-        _scrollback.Add(line);
-        if (_scrollback.Count > _maxScroll) _scrollback.RemoveRange(0, _scrollback.Count - _maxScroll);
+        if (_sb.Length == 0) return;
+        if (_sbCount < _sb.Length) _sb[(_sbHead + _sbCount++) % _sb.Length] = line;
+        else { _sb[_sbHead] = line; _sbHead = (_sbHead + 1) % _sb.Length; }   // 滿了：覆蓋最舊一行
    }

    // ── 輸出字元 ─────────────────────────────────────────────
@@ -229,7 +233,7 @@ public sealed class ScreenBuffer

    public void EraseInDisplay(int mode)
    {
-        if (mode == 3) { _scrollback.Clear(); return; }
+        if (mode == 3) { Array.Clear(_sb); _sbHead = 0; _sbCount = 0; return; }
        if (mode == 2) { for (int r = 0; r < Rows; r++) _screen[r] = BlankLine(); return; }
        if (mode == 0)
        {
@@ -270,20 +274,29 @@ public sealed class ScreenBuffer
    {
        cols = Math.Max(1, cols); rows = Math.Max(1, rows);
        if (cols == Cols && rows == Rows) return;
-        var ng = new Cell[rows][];
-        for (int r = 0; r < rows; r++)
-        {
-            ng[r] = new Cell[cols];
-            for (int c = 0; c < cols; c++)
-                ng[r][c] = (r < Rows && c < Cols) ? _screen[r][c] : BlankDefault();
-        }
-        _screen = ng;
+        _screen = Reflow(_screen, rows, cols);
+        // alt screen 啟用中也要一併 reflow 保存的主畫面，否則 resize 後 ExitAlt 會還原失敗、
+        // 畫面殘留 TUI 內容。不可把 _mainScreen 丟掉。
+        if (_mainScreen != null) _mainScreen = Reflow(_mainScreen, rows, cols);
        Rows = rows; Cols = cols;
        _top = 0; _bottom = Rows - 1;
        CursorRow = Math.Clamp(CursorRow, 0, Rows - 1);
        CursorCol = Math.Clamp(CursorCol, 0, Cols - 1);
        _wrapPending = false;
-        _mainScreen = null;
-        if (AltActive) { /* alt 下 resize：重建 alt 畫面 */ }
+    }
+
+    /// <summary>把字格陣列重排到新尺寸，保留左上重疊區，其餘填預設空白。</summary>
+    private Cell[][] Reflow(Cell[][] src, int rows, int cols)
+    {
+        int oldRows = src.Length;
+        var ng = new Cell[rows][];
+        for (int r = 0; r < rows; r++)
+        {
+            ng[r] = new Cell[cols];
+            int oldCols = r < oldRows ? src[r].Length : 0;
+            for (int c = 0; c < cols; c++)
+                ng[r][c] = (c < oldCols) ? src[r][c] : BlankDefault();
+        }
+        return ng;
    }
 }
@@ -9,6 +9,11 @@ public static class TerminalInput
 {
    public static byte[]? Map(KeyEventArgs e, bool appCursor)
    {
+        // Enter：一般送 CR(\r) 視為「送出」；Shift+Enter 送 LF(\n)，讓 PSReadLine / Kiro 等
+        // 視為「插入換行」以便輸入多行指令，而不是直接送出。
+        if (e.KeyCode == Keys.Enter)
+            return new[] { (byte)(e.Shift ? '\n' : '\r') };
+
        string? seq = e.KeyCode switch
        {
            Keys.Up => appCursor ? "\x1bOA" : "\x1b[A",
@@ -21,7 +26,6 @@ public static class TerminalInput
            Keys.Delete => "\x1b[3~",
            Keys.PageUp => "\x1b[5~",
            Keys.PageDown => "\x1b[6~",
-            Keys.Enter => "\r",
            Keys.Tab => "\t",
            Keys.Escape => "\x1b",
            Keys.Back => "\x7f",
@@ -41,4 +45,17 @@ public static class TerminalInput
        };
        return seq is null ? null : Encoding.ASCII.GetBytes(seq);
    }
+
+    /// <summary>滾輪 → 上/下方向鍵序列（alt screen 用，每格 3 行）。notches 正值往上。</summary>
+    public static byte[]? WheelArrows(int notches, bool appCursor)
+    {
+        if (notches == 0) return null;
+        string one = notches > 0
+            ? (appCursor ? "\x1bOA" : "\x1b[A")
+            : (appCursor ? "\x1bOB" : "\x1b[B");
+        int count = Math.Abs(notches) * 3;
+        var sb = new StringBuilder(one.Length * count);
+        for (int i = 0; i < count; i++) sb.Append(one);
+        return Encoding.ASCII.GetBytes(sb.ToString());
+    }
 }
@@ -17,6 +17,13 @@ public sealed class TerminalView : UserControl
    private readonly ScreenBuffer _buf;
    private readonly AnsiParser _parser;
    private readonly Font _font;
+    // 繪製熱路徑的快取：Font 建立是貴的 GDI 操作，預先做好 4 種變體；
+    // SolidBrush 的 Color 可改，用單一 brush 重複填色，避免每段 run 都 new/dispose。
+    private readonly Font _fontBold, _fontUnderline, _fontBoldUnderline;
+    private readonly SolidBrush _fill = new(Color.Black);
+    private readonly StringBuilder _runSb = new();
+    private readonly DarkScrollBar _vscroll;     // 右側深色垂直捲軸（可拖曳捲動 scrollback）
+    private bool _suppressScroll;                // 程式設定捲軸值時抑制回呼
    private int _cellW, _cellH;
    private int _scrollOffset;                  // 0 = 貼底；>0 = 往上看 scrollback
    private int _lastCols = -1, _lastRows = -1;
@@ -33,6 +40,9 @@ public sealed class TerminalView : UserControl
        BackColor = Color.FromArgb(18, 18, 22);
        ImeMode = ImeMode.NoControl;   // 容器控制項預設關 IME，這裡明確開啟讓使用者可切中文
        _font = new Font(profile.FontFamily, profile.FontSize);
+        _fontBold = new Font(_font, FontStyle.Bold);
+        _fontUnderline = new Font(_font, FontStyle.Underline);
+        _fontBoldUnderline = new Font(_font, FontStyle.Bold | FontStyle.Underline);
        using (var g = CreateGraphics())
        {
            var sz = TextRenderer.MeasureText(g, "W", _font, Size.Empty, TextFormatFlags.NoPadding);
@@ -42,28 +52,48 @@ public sealed class TerminalView : UserControl
        _buf = new ScreenBuffer(profile.Cols, profile.Rows,
            Color.FromArgb(220, 220, 220), BackColor, profile.ScrollbackLines);
        _parser = new AnsiParser(_buf);
+        _parser.Response += bytes => SendData?.Invoke(bytes);   // DSR/DA 查詢回覆（如 ESC[6n 游標位置）
+
+        // 右側深色垂直捲軸：拖曳即捲動 scrollback。內容寬度會扣掉捲軸寬，故文字不會被蓋住。
+        _vscroll = new DarkScrollBar { Dock = DockStyle.Right, SmallChange = 1, Minimum = 0, Maximum = 0 };
+        _vscroll.Scroll += OnVScroll;
+        Controls.Add(_vscroll);
    }

    /// <summary>餵入遠端資料（須在 UI thread 呼叫）。</summary>
    public void Feed(byte[] data)
    {
+        int before = _buf.ScrollbackCount;
        _parser.Feed(data);
-        _scrollOffset = 0;          // 新輸出貼底
+        // 已貼底才跟隨新輸出；使用者往回看歷史時，補償 scrollback 增量讓畫面停在原處，
+        // 不會每來一筆輸出就被拉回底部。
+        if (_scrollOffset > 0)
+            _scrollOffset = Math.Min(_scrollOffset + (_buf.ScrollbackCount - before), _buf.ScrollbackCount);
+        UpdateScrollBar();
        Invalidate();
    }

+    private int ContentWidth => Math.Max(_cellW, ClientSize.Width - (_vscroll?.Width ?? 0));
    private int VisibleRows => Math.Max(1, ClientSize.Height / _cellH);
-    private int VisibleCols => Math.Max(1, ClientSize.Width / _cellW);
+    private int VisibleCols => Math.Max(1, ContentWidth / _cellW);

    // ── resize → 通知 PTY ────────────────────────────────────
    protected override void OnSizeChanged(EventArgs e)
    {
        base.OnSizeChanged(e);
+
+        // 視窗最小化、或分頁/分割切換的瞬間，ClientSize 會變成 0/極小。此時若把退化尺寸
+        // （會被算成 1×1）送給 PTY，ConPTY 下的全螢幕 TUI（如 Kiro CLI）會誤以為終端機只剩
+        // 1×1 而停止重繪、輸入也像「卡住」。直接忽略這種尺寸，還原後再以正常尺寸重繪即可。
+        if (ClientSize.Width < _cellW || ClientSize.Height < _cellH) return;
+        if (FindForm() is { WindowState: FormWindowState.Minimized }) return;
+
        int cols = VisibleCols, rows = VisibleRows;
        if (cols == _lastCols && rows == _lastRows) return;
        _lastCols = cols; _lastRows = rows;
        _buf.Resize(cols, rows);
        Resized?.Invoke(cols, rows);
+        UpdateScrollBar();
        Invalidate();
    }

@@ -99,36 +129,48 @@ public sealed class TerminalView : UserControl
            if ((cell.Attr & CellAttr.Wide) != 0)
            {
                var wr = new Rectangle(c * _cellW, y, _cellW * 2, _cellH);
-                using (var bb = new SolidBrush(bg)) g.FillRectangle(bb, wr);
+                FillRect(g, wr, bg);
                DrawRun(g, cell.Ch == '\0' ? " " : cell.Ch.ToString(), cell.Attr, wr, fg);
                c++;
                continue;
            }

-            // 合併同屬性連續的窄字
+            // 合併同色同字型的連續窄字（每個 cell 的顏色只解析一次）
+            const CellAttr FontAttrs = CellAttr.Bold | CellAttr.Underline;
            int start = c;
-            var sb = new StringBuilder();
+            _runSb.Clear();
+            _runSb.Append(cell.Ch == '\0' ? ' ' : cell.Ch);
+            c++;
            while (c < line.Length)
            {
                var cur = line[c];
                if ((cur.Attr & (CellAttr.Wide | CellAttr.WideTrail)) != 0) break;
                ResolveColors(cur, out var f2, out var b2, abs, c);
-                if (f2 != fg || b2 != bg || (cur.Attr & CellAttr.Bold) != (cell.Attr & CellAttr.Bold)) break;
-                sb.Append(cur.Ch == '\0' ? ' ' : cur.Ch);
+                if (f2 != fg || b2 != bg || (cur.Attr & FontAttrs) != (cell.Attr & FontAttrs)) break;
+                _runSb.Append(cur.Ch == '\0' ? ' ' : cur.Ch);
                c++;
            }
            var rect = new Rectangle(start * _cellW, y, (c - start) * _cellW, _cellH);
-            using (var bb = new SolidBrush(bg)) g.FillRectangle(bb, rect);
-            DrawRun(g, sb.ToString(), cell.Attr, rect, fg);
+            FillRect(g, rect, bg);
+            DrawRun(g, _runSb.ToString(), cell.Attr, rect, fg);
        }
    }

+    private void FillRect(Graphics g, Rectangle rect, Color bg)
+    {
+        _fill.Color = bg;
+        g.FillRectangle(_fill, rect);
+    }
+
+    private Font FontFor(CellAttr attr)
+    {
+        bool bold = (attr & CellAttr.Bold) != 0, ul = (attr & CellAttr.Underline) != 0;
+        return bold ? (ul ? _fontBoldUnderline : _fontBold) : (ul ? _fontUnderline : _font);
+    }
+
    private void DrawRun(Graphics g, string text, CellAttr attr, Rectangle rect, Color fg)
    {
-        var style = (attr & CellAttr.Bold) != 0 ? FontStyle.Bold : FontStyle.Regular;
-        if ((attr & CellAttr.Underline) != 0) style |= FontStyle.Underline;
-        using var fnt = style == FontStyle.Regular ? _font : new Font(_font, style);
-        TextRenderer.DrawText(g, text, fnt, rect, fg,
+        TextRenderer.DrawText(g, text, FontFor(attr), rect, fg,
            TextFormatFlags.NoPadding | TextFormatFlags.NoPrefix | TextFormatFlags.Left);
    }

@@ -165,10 +207,7 @@ public sealed class TerminalView : UserControl

    protected override void OnKeyPress(KeyPressEventArgs e)
    {
-        if (!char.IsControl(e.KeyChar) || e.KeyChar is '\r' or '\t' or '\b' or '\x1b')
-        {
-            // \r,\t,\b,\x1b 已由 OnKeyDown 送出，這裡只送一般可列印字元與 Ctrl 組合碼
-        }
+        // \r,\t,\b,\x1b 已由 OnKeyDown 送出，這裡只送一般可列印字元與 Ctrl 組合碼
        if (e.KeyChar >= ' ' && e.KeyChar != '\x7f')
            SendData?.Invoke(Encoding.UTF8.GetBytes(e.KeyChar.ToString()));
        else if (char.IsControl(e.KeyChar) && e.KeyChar is not ('\r' or '\t' or '\b' or '\x1b'))
@@ -179,11 +218,57 @@ public sealed class TerminalView : UserControl
    // ── 滑鼠：scrollback / 選取 / 貼上 ───────────────────────
    protected override void OnMouseWheel(MouseEventArgs e)
    {
-        int delta = e.Delta / 120 * 3;
-        _scrollOffset = Math.Clamp(_scrollOffset + delta, 0, _buf.ScrollbackCount);
+        int notches = e.Delta / 120;
+        // alt screen（vim / htop 等全螢幕 TUI）沒有 scrollback：慣例是把滾輪轉成
+        // 上下方向鍵送給對方，讓應用程式自己捲動。
+        if (_buf.AltActive)
+        {
+            var seq = TerminalInput.WheelArrows(notches, _parser.AppCursorKeys);
+            if (seq != null) SendData?.Invoke(seq);
+            return;
+        }
+        _scrollOffset = Math.Clamp(_scrollOffset + notches * 3, 0, _buf.ScrollbackCount);
+        UpdateScrollBar();
        Invalidate();
    }

+    // ── 垂直捲軸 ─────────────────────────────────────────────
+    private void OnVScroll(object? sender, EventArgs e)
+    {
+        if (_suppressScroll) return;
+        // 捲軸值 = 視窗第一列的絕對 index；_scrollOffset = 距底部的列數。
+        _scrollOffset = Math.Clamp(_buf.ScrollbackCount - _vscroll.Value, 0, _buf.ScrollbackCount);
+        Invalidate();
+    }
+
+    /// <summary>依目前 scrollback / 捲動位置同步捲軸的範圍與滑塊位置。</summary>
+    private void UpdateScrollBar()
+    {
+        if (_vscroll is null) return;
+        _suppressScroll = true;
+        try
+        {
+            int visible = VisibleRows;
+            int total = _buf.TotalRows;
+            if (_buf.ScrollbackCount <= 0)
+            {
+                _vscroll.Enabled = false;
+                _vscroll.LargeChange = 1;
+                _vscroll.Maximum = 0;
+                _vscroll.Value = 0;
+                return;
+            }
+            _vscroll.Enabled = true;
+            // 先設 LargeChange/Maximum 再設 Value，避免 Value 超出可達範圍被夾掉。
+            _vscroll.LargeChange = Math.Max(1, visible);
+            _vscroll.Maximum = Math.Max(0, total - 1);
+            int top = _buf.ScrollbackCount - _scrollOffset;          // 視窗第一列絕對 index
+            int maxValue = Math.Max(0, _vscroll.Maximum - _vscroll.LargeChange + 1);
+            _vscroll.Value = Math.Clamp(top, 0, maxValue);
+        }
+        finally { _suppressScroll = false; }
+    }
+
    protected override void OnMouseDown(MouseEventArgs e)
    {
        Focus();
@@ -195,7 +280,8 @@ public sealed class TerminalView : UserControl
        }
        else if (e.Button == MouseButtons.Right)
        {
-            if (_hasSel) CopySelection(); else Paste();
+            if (_hasSel) { CopySelection(); _hasSel = false; Invalidate(); }   // 複製後清掉反白，讓 user 知道已動作
+            else Paste();
        }
    }

@@ -257,8 +343,17 @@ public sealed class TerminalView : UserControl
    {
        try
        {
-            if (Clipboard.ContainsText())
-                SendData?.Invoke(Encoding.UTF8.GetBytes(Clipboard.GetText().Replace("\r\n", "\r")));
+            if (!Clipboard.ContainsText()) return;
+            // 換行統一成 CR：剪貼簿多為 \r\n，也處理單獨的 \n。
+            var text = Clipboard.GetText().Replace("\r\n", "\r").Replace('\n', '\r');
+
+            // 應用程式啟用 bracketed paste（PSReadLine / Kiro CLI 等）時，以 ESC[200~ … ESC[201~
+            // 包夾整段貼上內容，讓對方視為「單次貼上」而非逐行 Enter 立即送出；
+            // 未啟用時才退回原本逐字送出（一般 shell 的預期行為）。
+            var data = _parser.BracketedPaste
+                ? Encoding.UTF8.GetBytes("\x1b[200~" + text + "\x1b[201~")
+                : Encoding.UTF8.GetBytes(text);
+            SendData?.Invoke(data);
        }
        catch { }
    }
@@ -332,6 +427,19 @@ public sealed class TerminalView : UserControl
        finally { ImmReleaseContext(Handle, hImc); }
    }

+    protected override void Dispose(bool disposing)
+    {
+        if (disposing)
+        {
+            _fill.Dispose();
+            _fontBold.Dispose();
+            _fontUnderline.Dispose();
+            _fontBoldUnderline.Dispose();
+            _font.Dispose();
+        }
+        base.Dispose(disposing);
+    }
+
    [StructLayout(LayoutKind.Sequential)] private struct POINT { public int x, y; }
    [StructLayout(LayoutKind.Sequential)] private struct RECT { public int left, top, right, bottom; }
    [StructLayout(LayoutKind.Sequential)] private struct COMPOSITIONFORM { public int dwStyle; public POINT ptCurrentPos; public RECT rcArea; }
Author	SHA1	Message	Date
etwen	c9671c819f	merge: v0.4.0 performance & stability overhaul	2026-07-02 11:23:05 +08:00
etwen	ef533d9783	docs: add release notes for v0.4.0	2026-07-02 11:22:52 +08:00
etwenandClaude Fable 5	572e6589ec	feat: v0.4.0 performance & stability overhaul Terminal: - cache font variants + single reusable brush in render hot path; resolve cell colors once per cell; dispose GDI resources - scrollback: List+RemoveRange -> O(1) ring buffer - follow new output only when already at bottom (no more yank-to-bottom while reading history) - alt-screen mouse wheel -> arrow keys (vim/htop scroll) - answer DSR (ESC[5n/6n) and DA (ESC[c) queries so TUIs no longer hang - remove dead code in OnKeyPress Encoding correctness (garbled CJK across chunk boundaries): - stateful UTF-8 Decoder in TTLInterpreter.OnData, SerialBridgeServer rx forwarding, and SessionLogger.Write Sessions: - ShellChannel: free proc-thread attribute list, close hProcess, notify '[ETTerms] shell process exited' in the tab - SshChannel: surface ErrorOccurred / ShellStream.Closed in the tab; Write no longer throws into the UI thread on a dead connection PDU: - new shared ETTerms.PduCore project replaces the two drifted copies of PduController (GUI + PduMcp); logging via injected delegates - batched SNMP GET (GetAllPortsStatus): 12-port poll is 3 UDP round-trips instead of 36 (StatusView polling + pdu_status tool) Scripting: - cap TTL receive buffer at 1MB; skip re-scan in wait when buffer length unchanged - merge ScriptRunner.RunAsync/RunGroupAsync; new TtlScript helper dedups script picking + group-command checks (3 copies -> 1) Misc: - ConnectionStore: parse LastUsedUtc with InvariantCulture/RoundtripKind - version 0.4.0; About changelog; CLAUDE.md notes (intentional group barrier behavior, SSH.NET reflection resize caveat) Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-02 09:17:19 +08:00
etwenandClaude Opus 4.8	38b6af1f35	docs: update README & add release notes for v0.3.3 Bump the version badge to 0.3.3 and add the v0.3.3 entry to Version History in both README.md and README.zh-TW.md (terminal input fix). Add the v0.3.3 release note, and include the previously uncommitted v0.3.2 release note. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-06-16 16:29:36 +08:00
etwen	9628609eea	merge: keep terminal focus after activity (v0.3.3)	2026-06-16 16:24:46 +08:00
etwenandClaude Opus 4.8	fc69adfae4	fix(terminal): keep keyboard focus on terminal after activity (v0.3.3) The terminal's DarkScrollBar derives from Control, which is selectable by default. Once enough output accumulated to create scrollback, the scrollbar became enabled and was the only selectable child of the TerminalView (a ContainerControl). On window re-activation (minimize/restore, click away and back) WinForms restored focus down the container chain onto the scrollbar, which has no keyboard handling, so typing/Enter went nowhere until the session was reopened. This affected both Serial and PowerShell tabs (shared TerminalView), and only after output appeared — matching the reported symptom. Make the scrollbar mouse-only: SetStyle(Selectable, false) + TabStop=false, so it never takes keyboard focus and the TerminalView keeps focus itself, exactly as it already did when idle (scrollbar disabled). Bump version to 0.3.3 and add the About changelog entry. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>	2026-06-16 16:24:37 +08:00
etwen	260f5b57d5	merge: Status page with PDU outlet control buttons (v0.3.2)	2026-06-11 09:03:41 +08:00
etwen	1263514586	feat(status): add Status page with PDU outlet on/off buttons (v0.3.2) - New left-rail Status view (StatusView.cs) hosting the PDU tab; PDU panel moved out of SettingsView and auto-polls all 12 outlets every 3s on a background thread (no manual Refresh). - Each outlet row gets a Control button (DataGridViewButtonColumn) that toggles the port via SNMP off the UI thread, re-reads after ~400ms, and resets the grid on disconnect. - fix(shell): ShellChannel falls back to the user home folder when StartupDirectory no longer exists (avoids CreateProcess 267). - docs: update ARCHITECTURE / CLAUDE / README / README.zh-TW and About changelog; bump version to 0.3.2.	2026-06-11 09:03:32 +08:00
etwen	9addc5f2d9	docs(readme): update to v0.3.1; add v0.2.2 / v0.3.0 / v0.3.1 history & terminal feature notes	2026-06-08 16:14:03 +08:00
etwen	a9050e31ea	merge: terminal scrollbar, paste & copy fixes (v0.3.1)	2026-06-08 16:09:48 +08:00
etwen	4bc15ff529	fix(terminal): dark scrollbar, bracketed paste, clear selection on copy (v0.3.1) - Add owner-drawn DarkScrollBar (slim, dark, rounded thumb) to TerminalView; content width excludes the bar so text isn't covered; synced on feed/wheel/resize. - Support bracketed paste (DEC mode 2004): wrap multi-line paste in ESC[200~..ESC[201~ when the app enables it (PSReadLine/Kiro CLI), so pasted lines aren't each submitted immediately. - Clear text selection after right-click copy so the user knows it worked. - Bump version to 0.3.1; rewrite v0.3.0 changelog in plain language and add v0.3.1 entry; update ARCHITECTURE.md / CLAUDE.md.	2026-06-08 16:09:38 +08:00
etwen	6a85a48e6d	merge: PDU MCP server (v0.3.0)	2026-06-08 10:12:24 +08:00
etwen	02f4ac49e8	feat(pdu): add PDU MCP server for AI-driven SNMP power control New ETTerms.PduMcp stdio MCP server lets AI agents (Kiro/Claude CLI) control SNMP PDU outlets directly. Unlike serial, SNMP is non-exclusive so it talks to the PDU directly without bridging through the GUI. Tools: pdu_connect / pdu_list / pdu_set_port / pdu_get_port / pdu_status / pdu_power_cycle / pdu_disconnect. - McpRegistrar now registers both etterms-serial and etterms-pdu in one click - Settings -> AI MCP shows both server paths - publish target (PublishMcpServers) bundles both MCP servers - bump version to 0.3.0, update About changelog, ARCHITECTURE.md, CLAUDE.md	2026-06-08 10:12:15 +08:00
etwen	89ec175669	docs: credit KKTerm (by ryantsai, MIT) in Acknowledgments	2026-06-05 13:54:29 +08:00
etwen	776509cc6c	merge: high-DPI scaling & layout fixes (v0.2.2)	2026-06-05 13:33:33 +08:00
etwen	a66d2a19e4	fix(ui): high-DPI scaling and layout clipping (v0.2.2) Switch to AutoScaleMode.Dpi (PerMonitorV2) so control sizes scale by the exact DPI ratio, matching point-font rendering and eliminating text/button clipping at 125%/150%. Make toolbar, settings, sidebar buttons and About labels AutoSize; align left tab bar with workspace toolbar (both 40px); About cards now auto-grow and the left column scrolls. ActivityRail cell size is DPI-aware. No version bump.	2026-06-05 13:33:25 +08:00
etwen	68b727f38a	merge: terminal resize/Shift+Enter bugfixes (v0.2.2)	2026-06-05 11:02:45 +08:00
etwen	e5c10afd94	fix(terminal): stop minimize/switch from freezing ConPTY; add Shift+Enter newline (v0.2.2) OnSizeChanged now ignores degenerate sizes (minimized / smaller than one cell), so ConPTY no longer receives a 1x1 size that collapsed full-screen TUIs like Kiro CLI. ScreenBuffer.Resize reflows both the live and saved alt-screen buffers instead of discarding the main-screen backup. TerminalInput.Map sends LF for Shift+Enter (CR for plain Enter) so the shell inserts a newline for multi-line input. Bump version to 0.2.2 and add About changelog entry.	2026-06-05 11:02:39 +08:00
etwen	fc97e04846	build: add self-contained portable publish variant (v0.2.1) PublishSerialMcp target now inherits the GUI's SelfContained setting, so a --self-contained true publish also produces a runtime-free ETTerms.SerialMcp. Document both publish variants in ARCHITECTURE.md / CLAUDE.md: framework-dependent ETTerms_v{Version}\ and portable ETTerms_v{Version}_portable\ (no .NET runtime install needed).	2026-06-05 09:33:24 +08:00