refactor: remove terminal enhancements (keep core Shell Integration fix)

Reverted:
- 77051f2: docs for terminal sync
- 3a27736: terminal sync (RooPseudoterminal, openInVscodeTerminal)
- 4e54bf9: 100ms debounce removal

Kept:
- c328295: core fix (race condition, warning toggle, UTF-8)
- 7d381b5: save terminalShellIntegrationWarningDisabled setting

Author: q1600822305

UPDATE_GUIDE.md

@@ -118,23 +118,10 @@ pnpm vsix
 
 ### 终端增强
 - `src/integrations/terminal/TerminalRegistry.ts` - 修复竞态条件
-- `src/integrations/terminal/Terminal.ts` - Windows UTF-8 编码支持 + 终端面板显示方法
+- `src/integrations/terminal/Terminal.ts` - Windows UTF-8 编码支持
 - `src/integrations/terminal/ExecaTerminalProcess.ts` - 内联终端 UTF-8 编码
-- `src/integrations/terminal/RooPseudoterminal.ts` - Pseudoterminal 实现（双向同步）
 - `src/core/tools/ExecuteCommandTool.ts` - 警告开关逻辑
-- `src/core/webview/webviewMessageHandler.ts` - 终端同步按钮处理
 - `webview-ui/src/components/settings/TerminalSettings.tsx` - 警告开关 UI
-- `webview-ui/src/components/chat/CommandExecution.tsx` - 终端同步按钮 UI
-
-### 终端同步功能（类似 Windsurf/Cursor）
-- `packages/types/src/vscode-extension-host.ts` - 添加 `openInVscodeTerminal` 消息类型
-- `webview-ui/src/i18n/locales/en/chat.json` - 英文翻译
-- `webview-ui/src/i18n/locales/zh-CN/chat.json` - 中文翻译
-
-**功能说明**：点击命令执行区域的终端图标，可以：
-1. 切换到 VSCode 终端模式（关闭内联终端）
-2. 显示/聚焦 VSCode 终端面板
-3. 后续命令在 VSCode 终端执行，输出实时同步到 webview
 
 ### Shell Integration 修复
 - `src/integrations/terminal/TerminalProcess.ts` - 修复中止按钮 + 30秒超时机制

packages/types/src/vscode-extension-host.ts

@@ -107,7 +107,6 @@ export interface ExtensionMessage {
 		| "worktreeDefaults"
 		| "worktreeIncludeStatus"
 		| "branchWorktreeIncludeResult"
-		| "openInVscodeTerminal"
 	text?: string
 	payload?: any // eslint-disable-line @typescript-eslint/no-explicit-any
 	checkpointWarning?: {
@@ -603,7 +602,6 @@ export interface WebviewMessage {
 		| "checkBranchWorktreeInclude"
 		| "createWorktreeInclude"
 		| "checkoutBranch"
-		| "openInVscodeTerminal"
 	text?: string
 	editedMessageContent?: string
 	tab?: "settings" | "history" | "mcp" | "modes" | "chat" | "marketplace" | "cloud"
@@ -642,8 +640,6 @@ export interface WebviewMessage {
 	ids?: string[]
 	hasSystemPromptOverride?: boolean
 	terminalOperation?: "continue" | "abort"
-	commandToOpenInTerminal?: string
-	outputToOpenInTerminal?: string
 	messageTs?: number
 	restoreCheckpoint?: boolean
 	historyPreviewCollapsed?: boolean

src/core/tools/ExecuteCommandTool.ts

@@ -201,8 +201,6 @@ export async function executeCommandInTerminal(
 	let shellIntegrationError: string | undefined
 	let hasAskedForCommandOutput = false
 
-	// Use VSCode terminal when shell integration is enabled, otherwise use execa
-	// When using VSCode terminal, output syncs to both webview and terminal panel in real-time
 	const terminalProvider = terminalShellIntegrationDisabled ? "execa" : "vscode"
 	const provider = await task.providerRef.deref()
 

src/core/webview/webviewMessageHandler.ts

@@ -40,7 +40,6 @@ import { MessageEnhancer } from "./messageEnhancer"
 import { checkExistKey } from "../../shared/checkExistApiConfig"
 import { experimentDefault } from "../../shared/experiments"
 import { Terminal } from "../../integrations/terminal/Terminal"
-import { TerminalRegistry } from "../../integrations/terminal/TerminalRegistry"
 import { openFile } from "../../integrations/misc/open-file"
 import { openImage, saveImage } from "../../integrations/misc/image-handler"
 import { selectImages } from "../../integrations/misc/process-images"
@@ -671,29 +670,6 @@ export const webviewMessageHandler = async (
 				provider.getCurrentTask()?.handleTerminalOperation(message.terminalOperation)
 			}
 			break
-		case "openInVscodeTerminal":
-			// Switch to VSCode terminal mode and show the terminal panel
-			// This disables inline terminal and enables real-time sync
-			{
-				// Disable inline terminal mode
-				await provider.contextProxy.setValue("terminalShellIntegrationDisabled", false)
-				Terminal.setShellIntegrationDisabled(false)
-
-				const cwd = provider.getCurrentTask()?.cwd || vscode.workspace.workspaceFolders?.[0]?.uri.fsPath
-				const taskId = provider.getCurrentTask()?.taskId
-
-				if (cwd) {
-					// Get or create a VSCode terminal and show it
-					const terminal = await TerminalRegistry.getOrCreateTerminal(cwd, taskId, "vscode")
-					if (terminal instanceof Terminal) {
-						terminal.showTerminal(false) // false = focus on terminal
-					}
-				}
-
-				// Update webview state
-				await provider.postStateToWebview()
-			}
-			break
 		case "clearTask":
 			// Clear task resets the current session. Delegation flows are
 			// handled via metadata; parent resumption occurs through