From a33a00256d59e9116d2246cbd9e288b03297b47d Mon Sep 17 00:00:00 2001
From: pomelo-nwu <czynwu@outlook.com>
Date: Mon, 17 Nov 2025 21:42:25 +0800
Subject: [PATCH] feat: update description

---
 packages/cli/package.json                     |   3 +-
 packages/cli/src/i18n/locales/en.js           |  64 ++++
 packages/cli/src/i18n/locales/zh.js           |  61 ++++
 packages/cli/src/ui/commands/chatCommand.ts   |  90 +++--
 .../cli/src/ui/commands/extensionsCommand.ts  |  13 +-
 packages/cli/src/ui/commands/ideCommand.ts    |  32 +-
 packages/cli/src/ui/commands/mcpCommand.ts    |  13 +-
 packages/cli/src/ui/commands/memoryCommand.ts |  92 +++--
 packages/cli/src/ui/commands/modelCommand.ts  |  16 +-
 .../src/ui/components/ConfigInitDisplay.tsx   |  12 +-
 .../ui/components/ContextSummaryDisplay.tsx   |  51 ++-
 packages/cli/src/ui/components/Help.tsx       |  84 +++--
 .../cli/src/ui/components/ModelDialog.tsx     |   5 +-
 .../messages/ToolConfirmationMessage.tsx      |  80 +++--
 .../cli/src/ui/components/views/McpStatus.tsx |  94 +++--
 packages/cli/src/ui/models/availableModels.ts |  15 +-
 scripts/check-i18n.ts                         | 329 ++++++++++++++++++
 scripts/copy_files.js                         |  13 +-
 18 files changed, 852 insertions(+), 215 deletions(-)
 create mode 100644 scripts/check-i18n.ts

diff --git a/packages/cli/package.json b/packages/cli/package.json
index 6dce0ccc..1c1fd520 100644
--- a/packages/cli/package.json
+++ b/packages/cli/package.json
@@ -19,7 +19,8 @@
     "format": "prettier --write .",
     "test": "vitest run",
     "test:ci": "vitest run",
-    "typecheck": "tsc --noEmit"
+    "typecheck": "tsc --noEmit",
+    "check-i18n": "tsx ../../scripts/check-i18n.ts"
   },
   "files": [
     "dist"
diff --git a/packages/cli/src/i18n/locales/en.js b/packages/cli/src/i18n/locales/en.js
index eed7f0b7..3c0fc22f 100644
--- a/packages/cli/src/i18n/locales/en.js
+++ b/packages/cli/src/i18n/locales/en.js
@@ -109,6 +109,8 @@ export default {
     'install required IDE companion for {{ideName}}',
   'enable IDE integration': 'enable IDE integration',
   'disable IDE integration': 'disable IDE integration',
+  'IDE integration is not supported in your current environment. To use this feature, run Qwen Code in one of these supported IDEs: VS Code or VS Code forks.':
+    'IDE integration is not supported in your current environment. To use this feature, run Qwen Code in one of these supported IDEs: VS Code or VS Code forks.',
   'Set up GitHub Actions': 'Set up GitHub Actions',
   'Configure terminal keybindings for multiline input (VS Code, Cursor, Windsurf)':
     'Configure terminal keybindings for multiline input (VS Code, Cursor, Windsurf)',
@@ -220,6 +222,12 @@ export default {
   'Project memory is currently empty.': 'Project memory is currently empty.',
   'Refreshing memory from source files...':
     'Refreshing memory from source files...',
+  'Add content to the memory. Use --global for global memory or --project for project memory.':
+    'Add content to the memory. Use --global for global memory or --project for project memory.',
+  'Usage: /memory add [--global|--project] <text to remember>':
+    'Usage: /memory add [--global|--project] <text to remember>',
+  'Attempting to save to memory {{scope}}: "{{fact}}"':
+    'Attempting to save to memory {{scope}}: "{{fact}}"',
 
   // ============================================================================
   // Commands - MCP
@@ -287,6 +295,8 @@ export default {
     'Error sharing conversation: {{error}}',
   'Conversation shared to {{filePath}}': 'Conversation shared to {{filePath}}',
   'No conversation found to share.': 'No conversation found to share.',
+  'Share the current conversation to a markdown or json file. Usage: /chat share <file>':
+    'Share the current conversation to a markdown or json file. Usage: /chat share <file>',
 
   // ============================================================================
   // Commands - Summary
@@ -344,6 +354,27 @@ export default {
   No: 'No',
   'No (esc)': 'No (esc)',
   'Yes, allow always for this session': 'Yes, allow always for this session',
+  'Modify in progress:': 'Modify in progress:',
+  'Save and close external editor to continue':
+    'Save and close external editor to continue',
+  'Apply this change?': 'Apply this change?',
+  'Yes, allow always': 'Yes, allow always',
+  'Modify with external editor': 'Modify with external editor',
+  'No, suggest changes (esc)': 'No, suggest changes (esc)',
+  "Allow execution of: '{{command}}'?": "Allow execution of: '{{command}}'?",
+  'Yes, allow always ...': 'Yes, allow always ...',
+  'Yes, and auto-accept edits': 'Yes, and auto-accept edits',
+  'Yes, and manually approve edits': 'Yes, and manually approve edits',
+  'No, keep planning (esc)': 'No, keep planning (esc)',
+  'URLs to fetch:': 'URLs to fetch:',
+  'MCP Server: {{server}}': 'MCP Server: {{server}}',
+  'Tool: {{tool}}': 'Tool: {{tool}}',
+  'Allow execution of MCP tool "{{tool}}" from server "{{server}}"?':
+    'Allow execution of MCP tool "{{tool}}" from server "{{server}}"?',
+  'Yes, always allow tool "{{tool}}" from server "{{server}}"':
+    'Yes, always allow tool "{{tool}}" from server "{{server}}"',
+  'Yes, always allow all tools from server "{{server}}"':
+    'Yes, always allow all tools from server "{{server}}"',
 
   // ============================================================================
   // Dialogs - Shell Confirmation
@@ -427,6 +458,16 @@ export default {
   'Waiting for Qwen OAuth authentication...':
     'Waiting for Qwen OAuth authentication...',
 
+  // ============================================================================
+  // Dialogs - Model
+  // ============================================================================
+  'Select Model': 'Select Model',
+  '(Press Esc to close)': '(Press Esc to close)',
+  'The latest Qwen Coder model from Alibaba Cloud ModelStudio (version: qwen3-coder-plus-2025-09-23)':
+    'The latest Qwen Coder model from Alibaba Cloud ModelStudio (version: qwen3-coder-plus-2025-09-23)',
+  'The latest Qwen Vision model from Alibaba Cloud ModelStudio (version: qwen3-vl-plus-2025-09-23)':
+    'The latest Qwen Vision model from Alibaba Cloud ModelStudio (version: qwen3-vl-plus-2025-09-23)',
+
   // ============================================================================
   // Dialogs - Permissions
   // ============================================================================
@@ -471,6 +512,29 @@ export default {
   '{{count}} prompt': '{{count}} prompt',
   '{{count}} prompts': '{{count}} prompts',
   '(from {{extensionName}})': '(from {{extensionName}})',
+  OAuth: 'OAuth',
+  'OAuth expired': 'OAuth expired',
+  'OAuth not authenticated': 'OAuth not authenticated',
+  'tools and prompts will appear when ready':
+    'tools and prompts will appear when ready',
+  '{{count}} tools cached': '{{count}} tools cached',
+  'Tools:': 'Tools:',
+  'Parameters:': 'Parameters:',
+  'Prompts:': 'Prompts:',
+  Blocked: 'Blocked',
+  '💡 Tips:': '💡 Tips:',
+  Use: 'Use',
+  'to show server and tool descriptions':
+    'to show server and tool descriptions',
+  'to show tool parameter schemas': 'to show tool parameter schemas',
+  'to hide descriptions': 'to hide descriptions',
+  'to authenticate with OAuth-enabled servers':
+    'to authenticate with OAuth-enabled servers',
+  Press: 'Press',
+  'to toggle tool descriptions on/off': 'to toggle tool descriptions on/off',
+  "Starting OAuth authentication for MCP server '{{name}}'...":
+    "Starting OAuth authentication for MCP server '{{name}}'...",
+  'Restarting MCP servers...': 'Restarting MCP servers...',
 
   // ============================================================================
   // Startup Tips
diff --git a/packages/cli/src/i18n/locales/zh.js b/packages/cli/src/i18n/locales/zh.js
index 104a8dce..82783e73 100644
--- a/packages/cli/src/i18n/locales/zh.js
+++ b/packages/cli/src/i18n/locales/zh.js
@@ -103,6 +103,8 @@ export default {
     '安装 {{ideName}} 所需的 IDE 配套工具',
   'enable IDE integration': '启用 IDE 集成',
   'disable IDE integration': '禁用 IDE 集成',
+  'IDE integration is not supported in your current environment. To use this feature, run Qwen Code in one of these supported IDEs: VS Code or VS Code forks.':
+    '您当前环境不支持 IDE 集成。要使用此功能，请在以下支持的 IDE 之一中运行 Qwen Code：VS Code 或 VS Code 分支版本。',
   'Set up GitHub Actions': '设置 GitHub Actions',
   'Configure terminal keybindings for multiline input (VS Code, Cursor, Windsurf)':
     '配置终端按键绑定以支持多行输入（VS Code、Cursor、Windsurf）',
@@ -204,6 +206,12 @@ export default {
     '项目记忆内容来自 {{path}}：\n\n---\n{{content}}\n---',
   'Project memory is currently empty.': '项目记忆当前为空',
   'Refreshing memory from source files...': '正在从源文件刷新记忆...',
+  'Add content to the memory. Use --global for global memory or --project for project memory.':
+    '添加内容到记忆。使用 --global 表示全局记忆，使用 --project 表示项目记忆',
+  'Usage: /memory add [--global|--project] <text to remember>':
+    '用法：/memory add [--global|--project] <要记住的文本>',
+  'Attempting to save to memory {{scope}}: "{{fact}}"':
+    '正在尝试保存到记忆 {{scope}}："{{fact}}"',
 
   // ============================================================================
   // Commands - MCP
@@ -266,6 +274,8 @@ export default {
   'Error sharing conversation: {{error}}': '分享对话时出错：{{error}}',
   'Conversation shared to {{filePath}}': '对话已分享到 {{filePath}}',
   'No conversation found to share.': '未找到要分享的对话',
+  'Share the current conversation to a markdown or json file. Usage: /chat share <file>':
+    '将当前对话分享到 markdown 或 json 文件。用法：/chat share <file>',
 
   // ============================================================================
   // Commands - Summary
@@ -320,6 +330,26 @@ export default {
   No: '否',
   'No (esc)': '否 (esc)',
   'Yes, allow always for this session': '是，本次会话总是允许',
+  'Modify in progress:': '正在修改：',
+  'Save and close external editor to continue': '保存并关闭外部编辑器以继续',
+  'Apply this change?': '是否应用此更改？',
+  'Yes, allow always': '是，总是允许',
+  'Modify with external editor': '使用外部编辑器修改',
+  'No, suggest changes (esc)': '否，建议更改 (esc)',
+  "Allow execution of: '{{command}}'?": "允许执行：'{{command}}'？",
+  'Yes, allow always ...': '是，总是允许 ...',
+  'Yes, and auto-accept edits': '是，并自动接受编辑',
+  'Yes, and manually approve edits': '是，并手动批准编辑',
+  'No, keep planning (esc)': '否，继续规划 (esc)',
+  'URLs to fetch:': '要获取的 URL：',
+  'MCP Server: {{server}}': 'MCP 服务器：{{server}}',
+  'Tool: {{tool}}': '工具：{{tool}}',
+  'Allow execution of MCP tool "{{tool}}" from server "{{server}}"?':
+    '允许执行来自服务器 "{{server}}" 的 MCP 工具 "{{tool}}"？',
+  'Yes, always allow tool "{{tool}}" from server "{{server}}"':
+    '是，总是允许来自服务器 "{{server}}" 的工具 "{{tool}}"',
+  'Yes, always allow all tools from server "{{server}}"':
+    '是，总是允许来自服务器 "{{server}}" 的所有工具',
 
   // ============================================================================
   // Dialogs - Shell Confirmation
@@ -394,6 +424,16 @@ export default {
     '按任意键返回认证类型选择',
   'Waiting for Qwen OAuth authentication...': '正在等待 Qwen OAuth 认证...',
 
+  // ============================================================================
+  // Dialogs - Model
+  // ============================================================================
+  'Select Model': '选择模型',
+  '(Press Esc to close)': '（按 Esc 关闭）',
+  'The latest Qwen Coder model from Alibaba Cloud ModelStudio (version: qwen3-coder-plus-2025-09-23)':
+    '来自阿里云 ModelStudio 的最新 Qwen Coder 模型（版本：qwen3-coder-plus-2025-09-23）',
+  'The latest Qwen Vision model from Alibaba Cloud ModelStudio (version: qwen3-vl-plus-2025-09-23)':
+    '来自阿里云 ModelStudio 的最新 Qwen Vision 模型（版本：qwen3-vl-plus-2025-09-23）',
+
   // ============================================================================
   // Dialogs - Permissions
   // ============================================================================
@@ -438,6 +478,27 @@ export default {
   '{{count}} prompt': '{{count}} 个提示',
   '{{count}} prompts': '{{count}} 个提示',
   '(from {{extensionName}})': '（来自 {{extensionName}}）',
+  OAuth: 'OAuth',
+  'OAuth expired': 'OAuth 已过期',
+  'OAuth not authenticated': 'OAuth 未认证',
+  'tools and prompts will appear when ready': '工具和提示将在就绪时显示',
+  '{{count}} tools cached': '{{count}} 个工具已缓存',
+  'Tools:': '工具：',
+  'Parameters:': '参数：',
+  'Prompts:': '提示：',
+  Blocked: '已阻止',
+  '💡 Tips:': '💡 提示：',
+  Use: '使用',
+  'to show server and tool descriptions': '显示服务器和工具描述',
+  'to show tool parameter schemas': '显示工具参数架构',
+  'to hide descriptions': '隐藏描述',
+  'to authenticate with OAuth-enabled servers':
+    '使用支持 OAuth 的服务器进行认证',
+  Press: '按',
+  'to toggle tool descriptions on/off': '切换工具描述开关',
+  "Starting OAuth authentication for MCP server '{{name}}'...":
+    "正在为 MCP 服务器 '{{name}}' 启动 OAuth 认证...",
+  'Restarting MCP servers...': '正在重启 MCP 服务器...',
 
   // ============================================================================
   // Startup Tips
diff --git a/packages/cli/src/ui/commands/chatCommand.ts b/packages/cli/src/ui/commands/chatCommand.ts
index 4f3efb79..eaf156da 100644
--- a/packages/cli/src/ui/commands/chatCommand.ts
+++ b/packages/cli/src/ui/commands/chatCommand.ts
@@ -7,7 +7,6 @@
 import * as fsPromises from 'node:fs/promises';
 import React from 'react';
 import { Text } from 'ink';
-import { theme } from '../semantic-colors.js';
 import type {
   CommandContext,
   SlashCommand,
@@ -20,6 +19,7 @@ import path from 'node:path';
 import type { HistoryItemWithoutId } from '../types.js';
 import { MessageType } from '../types.js';
 import type { Content } from '@google/genai';
+import { t } from '../../i18n/index.js';
 
 interface ChatDetail {
   name: string;
@@ -67,7 +67,9 @@ const getSavedChatTags = async (
 
 const listCommand: SlashCommand = {
   name: 'list',
-  description: 'List saved conversation checkpoints',
+  get description() {
+    return t('List saved conversation checkpoints');
+  },
   kind: CommandKind.BUILT_IN,
   action: async (context): Promise<MessageActionReturn> => {
     const chatDetails = await getSavedChatTags(context, false);
@@ -75,7 +77,7 @@ const listCommand: SlashCommand = {
       return {
         type: 'message',
         messageType: 'info',
-        content: 'No saved conversation checkpoints found.',
+        content: t('No saved conversation checkpoints found.'),
       };
     }
 
@@ -83,7 +85,7 @@ const listCommand: SlashCommand = {
       ...chatDetails.map((chat) => chat.name.length),
     );
 
-    let message = 'List of saved conversations:\n\n';
+    let message = t('List of saved conversations:') + '\n\n';
     for (const chat of chatDetails) {
       const paddedName = chat.name.padEnd(maxNameLength, ' ');
       const isoString = chat.mtime.toISOString();
@@ -91,7 +93,7 @@ const listCommand: SlashCommand = {
       const formattedDate = match ? `${match[1]} ${match[2]}` : 'Invalid Date';
       message += `  - ${paddedName}  (saved on ${formattedDate})\n`;
     }
-    message += `\nNote: Newest last, oldest first`;
+    message += `\n${t('Note: Newest last, oldest first')}`;
     return {
       type: 'message',
       messageType: 'info',
@@ -102,8 +104,11 @@ const listCommand: SlashCommand = {
 
 const saveCommand: SlashCommand = {
   name: 'save',
-  description:
-    'Save the current conversation as a checkpoint. Usage: /chat save <tag>',
+  get description() {
+    return t(
+      'Save the current conversation as a checkpoint. Usage: /chat save <tag>',
+    );
+  },
   kind: CommandKind.BUILT_IN,
   action: async (context, args): Promise<SlashCommandActionReturn | void> => {
     const tag = args.trim();
@@ -111,7 +116,7 @@ const saveCommand: SlashCommand = {
       return {
         type: 'message',
         messageType: 'error',
-        content: 'Missing tag. Usage: /chat save <tag>',
+        content: t('Missing tag. Usage: /chat save <tag>'),
       };
     }
 
@@ -126,9 +131,12 @@ const saveCommand: SlashCommand = {
           prompt: React.createElement(
             Text,
             null,
-            'A checkpoint with the tag ',
-            React.createElement(Text, { color: theme.text.accent }, tag),
-            ' already exists. Do you want to overwrite it?',
+            t(
+              'A checkpoint with the tag {{tag}} already exists. Do you want to overwrite it?',
+              {
+                tag,
+              },
+            ),
           ),
           originalInvocation: {
             raw: context.invocation?.raw || `/chat save ${tag}`,
@@ -142,7 +150,7 @@ const saveCommand: SlashCommand = {
       return {
         type: 'message',
         messageType: 'error',
-        content: 'No chat client available to save conversation.',
+        content: t('No chat client available to save conversation.'),
       };
     }
 
@@ -152,13 +160,15 @@ const saveCommand: SlashCommand = {
       return {
         type: 'message',
         messageType: 'info',
-        content: `Conversation checkpoint saved with tag: ${decodeTagName(tag)}.`,
+        content: t('Conversation checkpoint saved with tag: {{tag}}.', {
+          tag: decodeTagName(tag),
+        }),
       };
     } else {
       return {
         type: 'message',
         messageType: 'info',
-        content: 'No conversation found to save.',
+        content: t('No conversation found to save.'),
       };
     }
   },
@@ -167,8 +177,11 @@ const saveCommand: SlashCommand = {
 const resumeCommand: SlashCommand = {
   name: 'resume',
   altNames: ['load'],
-  description:
-    'Resume a conversation from a checkpoint. Usage: /chat resume <tag>',
+  get description() {
+    return t(
+      'Resume a conversation from a checkpoint. Usage: /chat resume <tag>',
+    );
+  },
   kind: CommandKind.BUILT_IN,
   action: async (context, args) => {
     const tag = args.trim();
@@ -176,7 +189,7 @@ const resumeCommand: SlashCommand = {
       return {
         type: 'message',
         messageType: 'error',
-        content: 'Missing tag. Usage: /chat resume <tag>',
+        content: t('Missing tag. Usage: /chat resume <tag>'),
       };
     }
 
@@ -188,7 +201,9 @@ const resumeCommand: SlashCommand = {
       return {
         type: 'message',
         messageType: 'info',
-        content: `No saved checkpoint found with tag: ${decodeTagName(tag)}.`,
+        content: t('No saved checkpoint found with tag: {{tag}}.', {
+          tag: decodeTagName(tag),
+        }),
       };
     }
 
@@ -237,7 +252,9 @@ const resumeCommand: SlashCommand = {
 
 const deleteCommand: SlashCommand = {
   name: 'delete',
-  description: 'Delete a conversation checkpoint. Usage: /chat delete <tag>',
+  get description() {
+    return t('Delete a conversation checkpoint. Usage: /chat delete <tag>');
+  },
   kind: CommandKind.BUILT_IN,
   action: async (context, args): Promise<MessageActionReturn> => {
     const tag = args.trim();
@@ -245,7 +262,7 @@ const deleteCommand: SlashCommand = {
       return {
         type: 'message',
         messageType: 'error',
-        content: 'Missing tag. Usage: /chat delete <tag>',
+        content: t('Missing tag. Usage: /chat delete <tag>'),
       };
     }
 
@@ -257,13 +274,17 @@ const deleteCommand: SlashCommand = {
       return {
         type: 'message',
         messageType: 'info',
-        content: `Conversation checkpoint '${decodeTagName(tag)}' has been deleted.`,
+        content: t("Conversation checkpoint '{{tag}}' has been deleted.", {
+          tag: decodeTagName(tag),
+        }),
       };
     } else {
       return {
         type: 'message',
         messageType: 'error',
-        content: `Error: No checkpoint found with tag '${decodeTagName(tag)}'.`,
+        content: t("Error: No checkpoint found with tag '{{tag}}'.", {
+          tag: decodeTagName(tag),
+        }),
       };
     }
   },
@@ -309,8 +330,11 @@ export function serializeHistoryToMarkdown(history: Content[]): string {
 
 const shareCommand: SlashCommand = {
   name: 'share',
-  description:
-    'Share the current conversation to a markdown or json file. Usage: /chat share <file>',
+  get description() {
+    return t(
+      'Share the current conversation to a markdown or json file. Usage: /chat share <file>',
+    );
+  },
   kind: CommandKind.BUILT_IN,
   action: async (context, args): Promise<MessageActionReturn> => {
     let filePathArg = args.trim();
@@ -324,7 +348,7 @@ const shareCommand: SlashCommand = {
       return {
         type: 'message',
         messageType: 'error',
-        content: 'Invalid file format. Only .md and .json are supported.',
+        content: t('Invalid file format. Only .md and .json are supported.'),
       };
     }
 
@@ -333,7 +357,7 @@ const shareCommand: SlashCommand = {
       return {
         type: 'message',
         messageType: 'error',
-        content: 'No chat client available to share conversation.',
+        content: t('No chat client available to share conversation.'),
       };
     }
 
@@ -346,7 +370,7 @@ const shareCommand: SlashCommand = {
       return {
         type: 'message',
         messageType: 'info',
-        content: 'No conversation found to share.',
+        content: t('No conversation found to share.'),
       };
     }
 
@@ -362,14 +386,18 @@ const shareCommand: SlashCommand = {
       return {
         type: 'message',
         messageType: 'info',
-        content: `Conversation shared to ${filePath}`,
+        content: t('Conversation shared to {{filePath}}', {
+          filePath,
+        }),
       };
     } catch (err) {
       const errorMessage = err instanceof Error ? err.message : String(err);
       return {
         type: 'message',
         messageType: 'error',
-        content: `Error sharing conversation: ${errorMessage}`,
+        content: t('Error sharing conversation: {{error}}', {
+          error: errorMessage,
+        }),
       };
     }
   },
@@ -377,7 +405,9 @@ const shareCommand: SlashCommand = {
 
 export const chatCommand: SlashCommand = {
   name: 'chat',
-  description: 'Manage conversation history.',
+  get description() {
+    return t('Manage conversation history.');
+  },
   kind: CommandKind.BUILT_IN,
   subCommands: [
     listCommand,
diff --git a/packages/cli/src/ui/commands/extensionsCommand.ts b/packages/cli/src/ui/commands/extensionsCommand.ts
index e4f2c8fb..b02dcf9e 100644
--- a/packages/cli/src/ui/commands/extensionsCommand.ts
+++ b/packages/cli/src/ui/commands/extensionsCommand.ts
@@ -19,6 +19,7 @@ import {
   type SlashCommand,
   CommandKind,
 } from './types.js';
+import { t } from '../../i18n/index.js';
 
 async function listAction(context: CommandContext) {
   context.ui.addItem(
@@ -131,14 +132,18 @@ async function updateAction(context: CommandContext, args: string) {
 
 const listExtensionsCommand: SlashCommand = {
   name: 'list',
-  description: 'List active extensions',
+  get description() {
+    return t('List active extensions');
+  },
   kind: CommandKind.BUILT_IN,
   action: listAction,
 };
 
 const updateExtensionsCommand: SlashCommand = {
   name: 'update',
-  description: 'Update extensions. Usage: update <extension-names>|--all',
+  get description() {
+    return t('Update extensions. Usage: update <extension-names>|--all');
+  },
   kind: CommandKind.BUILT_IN,
   action: updateAction,
   completion: async (context, partialArg) => {
@@ -158,7 +163,9 @@ const updateExtensionsCommand: SlashCommand = {
 
 export const extensionsCommand: SlashCommand = {
   name: 'extensions',
-  description: 'Manage extensions',
+  get description() {
+    return t('Manage extensions');
+  },
   kind: CommandKind.BUILT_IN,
   subCommands: [listExtensionsCommand, updateExtensionsCommand],
   action: (context, args) =>
diff --git a/packages/cli/src/ui/commands/ideCommand.ts b/packages/cli/src/ui/commands/ideCommand.ts
index e04b4066..ebb7e3dc 100644
--- a/packages/cli/src/ui/commands/ideCommand.ts
+++ b/packages/cli/src/ui/commands/ideCommand.ts
@@ -26,6 +26,7 @@ import type {
 } from './types.js';
 import { CommandKind } from './types.js';
 import { SettingScope } from '../../config/settings.js';
+import { t } from '../../i18n/index.js';
 
 function getIdeStatusMessage(ideClient: IdeClient): {
   messageType: 'info' | 'error';
@@ -138,27 +139,35 @@ export const ideCommand = async (): Promise<SlashCommand> => {
   if (!currentIDE) {
     return {
       name: 'ide',
-      description: 'manage IDE integration',
+      get description() {
+        return t('manage IDE integration');
+      },
       kind: CommandKind.BUILT_IN,
       action: (): SlashCommandActionReturn =>
         ({
           type: 'message',
           messageType: 'error',
-          content: `IDE integration is not supported in your current environment. To use this feature, run Qwen Code in one of these supported IDEs: VS Code or VS Code forks.`,
+          content: t(
+            'IDE integration is not supported in your current environment. To use this feature, run Qwen Code in one of these supported IDEs: VS Code or VS Code forks.',
+          ),
         }) as const,
     };
   }
 
   const ideSlashCommand: SlashCommand = {
     name: 'ide',
-    description: 'manage IDE integration',
+    get description() {
+      return t('manage IDE integration');
+    },
     kind: CommandKind.BUILT_IN,
     subCommands: [],
   };
 
   const statusCommand: SlashCommand = {
     name: 'status',
-    description: 'check status of IDE integration',
+    get description() {
+      return t('check status of IDE integration');
+    },
     kind: CommandKind.BUILT_IN,
     action: async (): Promise<SlashCommandActionReturn> => {
       const { messageType, content } =
@@ -173,7 +182,12 @@ export const ideCommand = async (): Promise<SlashCommand> => {
 
   const installCommand: SlashCommand = {
     name: 'install',
-    description: `install required IDE companion for ${ideClient.getDetectedIdeDisplayName()}`,
+    get description() {
+      const ideName = ideClient.getDetectedIdeDisplayName() ?? 'IDE';
+      return t('install required IDE companion for {{ideName}}', {
+        ideName,
+      });
+    },
     kind: CommandKind.BUILT_IN,
     action: async (context) => {
       const installer = getIdeInstaller(currentIDE);
@@ -246,7 +260,9 @@ export const ideCommand = async (): Promise<SlashCommand> => {
 
   const enableCommand: SlashCommand = {
     name: 'enable',
-    description: 'enable IDE integration',
+    get description() {
+      return t('enable IDE integration');
+    },
     kind: CommandKind.BUILT_IN,
     action: async (context: CommandContext) => {
       context.services.settings.setValue(
@@ -268,7 +284,9 @@ export const ideCommand = async (): Promise<SlashCommand> => {
 
   const disableCommand: SlashCommand = {
     name: 'disable',
-    description: 'disable IDE integration',
+    get description() {
+      return t('disable IDE integration');
+    },
     kind: CommandKind.BUILT_IN,
     action: async (context: CommandContext) => {
       context.services.settings.setValue(
diff --git a/packages/cli/src/ui/commands/mcpCommand.ts b/packages/cli/src/ui/commands/mcpCommand.ts
index f0e66829..d8fec717 100644
--- a/packages/cli/src/ui/commands/mcpCommand.ts
+++ b/packages/cli/src/ui/commands/mcpCommand.ts
@@ -92,7 +92,12 @@ const authCommand: SlashCommand = {
       context.ui.addItem(
         {
           type: 'info',
-          text: `Starting OAuth authentication for MCP server '${serverName}'...`,
+          text: t(
+            "Starting OAuth authentication for MCP server '{{name}}'...",
+            {
+              name: serverName,
+            },
+          ),
         },
         Date.now(),
       );
@@ -208,7 +213,7 @@ const listCommand: SlashCommand = {
       return {
         type: 'message',
         messageType: 'error',
-        content: 'Could not retrieve tool registry.',
+        content: t('Could not retrieve tool registry.'),
       };
     }
 
@@ -320,14 +325,14 @@ const refreshCommand: SlashCommand = {
       return {
         type: 'message',
         messageType: 'error',
-        content: 'Could not retrieve tool registry.',
+        content: t('Could not retrieve tool registry.'),
       };
     }
 
     context.ui.addItem(
       {
         type: 'info',
-        text: 'Restarting MCP servers...',
+        text: t('Restarting MCP servers...'),
       },
       Date.now(),
     );
diff --git a/packages/cli/src/ui/commands/memoryCommand.ts b/packages/cli/src/ui/commands/memoryCommand.ts
index 560456f8..013b815d 100644
--- a/packages/cli/src/ui/commands/memoryCommand.ts
+++ b/packages/cli/src/ui/commands/memoryCommand.ts
@@ -15,15 +15,20 @@ import fs from 'fs/promises';
 import { MessageType } from '../types.js';
 import type { SlashCommand, SlashCommandActionReturn } from './types.js';
 import { CommandKind } from './types.js';
+import { t } from '../../i18n/index.js';
 
 export const memoryCommand: SlashCommand = {
   name: 'memory',
-  description: 'Commands for interacting with memory.',
+  get description() {
+    return t('Commands for interacting with memory.');
+  },
   kind: CommandKind.BUILT_IN,
   subCommands: [
     {
       name: 'show',
-      description: 'Show the current memory contents.',
+      get description() {
+        return t('Show the current memory contents.');
+      },
       kind: CommandKind.BUILT_IN,
       action: async (context) => {
         const memoryContent = context.services.config?.getUserMemory() || '';
@@ -31,8 +36,8 @@ export const memoryCommand: SlashCommand = {
 
         const messageContent =
           memoryContent.length > 0
-            ? `Current memory content from ${fileCount} file(s):\n\n---\n${memoryContent}\n---`
-            : 'Memory is currently empty.';
+            ? `${t('Current memory content from {{count}} file(s):', { count: String(fileCount) })}\n\n---\n${memoryContent}\n---`
+            : t('Memory is currently empty.');
 
         context.ui.addItem(
           {
@@ -45,7 +50,9 @@ export const memoryCommand: SlashCommand = {
       subCommands: [
         {
           name: '--project',
-          description: 'Show project-level memory contents.',
+          get description() {
+            return t('Show project-level memory contents.');
+          },
           kind: CommandKind.BUILT_IN,
           action: async (context) => {
             try {
@@ -57,8 +64,14 @@ export const memoryCommand: SlashCommand = {
 
               const messageContent =
                 memoryContent.trim().length > 0
-                  ? `Project memory content from ${projectMemoryPath}:\n\n---\n${memoryContent}\n---`
-                  : 'Project memory is currently empty.';
+                  ? t(
+                      'Project memory content from {{path}}:\n\n---\n{{content}}\n---',
+                      {
+                        path: projectMemoryPath,
+                        content: memoryContent,
+                      },
+                    )
+                  : t('Project memory is currently empty.');
 
               context.ui.addItem(
                 {
@@ -71,7 +84,9 @@ export const memoryCommand: SlashCommand = {
               context.ui.addItem(
                 {
                   type: MessageType.INFO,
-                  text: 'Project memory file not found or is currently empty.',
+                  text: t(
+                    'Project memory file not found or is currently empty.',
+                  ),
                 },
                 Date.now(),
               );
@@ -80,7 +95,9 @@ export const memoryCommand: SlashCommand = {
         },
         {
           name: '--global',
-          description: 'Show global memory contents.',
+          get description() {
+            return t('Show global memory contents.');
+          },
           kind: CommandKind.BUILT_IN,
           action: async (context) => {
             try {
@@ -96,8 +113,10 @@ export const memoryCommand: SlashCommand = {
 
               const messageContent =
                 globalMemoryContent.trim().length > 0
-                  ? `Global memory content:\n\n---\n${globalMemoryContent}\n---`
-                  : 'Global memory is currently empty.';
+                  ? t('Global memory content:\n\n---\n{{content}}\n---', {
+                      content: globalMemoryContent,
+                    })
+                  : t('Global memory is currently empty.');
 
               context.ui.addItem(
                 {
@@ -110,7 +129,9 @@ export const memoryCommand: SlashCommand = {
               context.ui.addItem(
                 {
                   type: MessageType.INFO,
-                  text: 'Global memory file not found or is currently empty.',
+                  text: t(
+                    'Global memory file not found or is currently empty.',
+                  ),
                 },
                 Date.now(),
               );
@@ -121,16 +142,20 @@ export const memoryCommand: SlashCommand = {
     },
     {
       name: 'add',
-      description:
-        'Add content to the memory. Use --global for global memory or --project for project memory.',
+      get description() {
+        return t(
+          'Add content to the memory. Use --global for global memory or --project for project memory.',
+        );
+      },
       kind: CommandKind.BUILT_IN,
       action: (context, args): SlashCommandActionReturn | void => {
         if (!args || args.trim() === '') {
           return {
             type: 'message',
             messageType: 'error',
-            content:
+            content: t(
               'Usage: /memory add [--global|--project] <text to remember>',
+            ),
           };
         }
 
@@ -150,8 +175,9 @@ export const memoryCommand: SlashCommand = {
           return {
             type: 'message',
             messageType: 'error',
-            content:
+            content: t(
               'Usage: /memory add [--global|--project] <text to remember>',
+            ),
           };
         } else {
           // No scope specified, will be handled by the tool
@@ -162,8 +188,9 @@ export const memoryCommand: SlashCommand = {
           return {
             type: 'message',
             messageType: 'error',
-            content:
+            content: t(
               'Usage: /memory add [--global|--project] <text to remember>',
+            ),
           };
         }
 
@@ -171,7 +198,10 @@ export const memoryCommand: SlashCommand = {
         context.ui.addItem(
           {
             type: MessageType.INFO,
-            text: `Attempting to save to memory ${scopeText}: "${fact}"`,
+            text: t('Attempting to save to memory {{scope}}: "{{fact}}"', {
+              scope: scopeText,
+              fact,
+            }),
           },
           Date.now(),
         );
@@ -185,21 +215,25 @@ export const memoryCommand: SlashCommand = {
       subCommands: [
         {
           name: '--project',
-          description: 'Add content to project-level memory.',
+          get description() {
+            return t('Add content to project-level memory.');
+          },
           kind: CommandKind.BUILT_IN,
           action: (context, args): SlashCommandActionReturn | void => {
             if (!args || args.trim() === '') {
               return {
                 type: 'message',
                 messageType: 'error',
-                content: 'Usage: /memory add --project <text to remember>',
+                content: t('Usage: /memory add --project <text to remember>'),
               };
             }
 
             context.ui.addItem(
               {
                 type: MessageType.INFO,
-                text: `Attempting to save to project memory: "${args.trim()}"`,
+                text: t('Attempting to save to project memory: "{{text}}"', {
+                  text: args.trim(),
+                }),
               },
               Date.now(),
             );
@@ -213,21 +247,25 @@ export const memoryCommand: SlashCommand = {
         },
         {
           name: '--global',
-          description: 'Add content to global memory.',
+          get description() {
+            return t('Add content to global memory.');
+          },
           kind: CommandKind.BUILT_IN,
           action: (context, args): SlashCommandActionReturn | void => {
             if (!args || args.trim() === '') {
               return {
                 type: 'message',
                 messageType: 'error',
-                content: 'Usage: /memory add --global <text to remember>',
+                content: t('Usage: /memory add --global <text to remember>'),
               };
             }
 
             context.ui.addItem(
               {
                 type: MessageType.INFO,
-                text: `Attempting to save to global memory: "${args.trim()}"`,
+                text: t('Attempting to save to global memory: "{{text}}"', {
+                  text: args.trim(),
+                }),
               },
               Date.now(),
             );
@@ -243,13 +281,15 @@ export const memoryCommand: SlashCommand = {
     },
     {
       name: 'refresh',
-      description: 'Refresh the memory from the source.',
+      get description() {
+        return t('Refresh the memory from the source.');
+      },
       kind: CommandKind.BUILT_IN,
       action: async (context) => {
         context.ui.addItem(
           {
             type: MessageType.INFO,
-            text: 'Refreshing memory from source files...',
+            text: t('Refreshing memory from source files...'),
           },
           Date.now(),
         );
diff --git a/packages/cli/src/ui/commands/modelCommand.ts b/packages/cli/src/ui/commands/modelCommand.ts
index b97e7c63..a25e96a1 100644
--- a/packages/cli/src/ui/commands/modelCommand.ts
+++ b/packages/cli/src/ui/commands/modelCommand.ts
@@ -12,10 +12,13 @@ import type {
 } from './types.js';
 import { CommandKind } from './types.js';
 import { getAvailableModelsForAuthType } from '../models/availableModels.js';
+import { t } from '../../i18n/index.js';
 
 export const modelCommand: SlashCommand = {
   name: 'model',
-  description: 'Switch the model for this session',
+  get description() {
+    return t('Switch the model for this session');
+  },
   kind: CommandKind.BUILT_IN,
   action: async (
     context: CommandContext,
@@ -36,7 +39,7 @@ export const modelCommand: SlashCommand = {
       return {
         type: 'message',
         messageType: 'error',
-        content: 'Content generator configuration not available.',
+        content: t('Content generator configuration not available.'),
       };
     }
 
@@ -45,7 +48,7 @@ export const modelCommand: SlashCommand = {
       return {
         type: 'message',
         messageType: 'error',
-        content: 'Authentication type not available.',
+        content: t('Authentication type not available.'),
       };
     }
 
@@ -55,7 +58,12 @@ export const modelCommand: SlashCommand = {
       return {
         type: 'message',
         messageType: 'error',
-        content: `No models available for the current authentication type (${authType}).`,
+        content: t(
+          'No models available for the current authentication type ({{authType}}).',
+          {
+            authType,
+          },
+        ),
       };
     }
 
diff --git a/packages/cli/src/ui/components/ConfigInitDisplay.tsx b/packages/cli/src/ui/components/ConfigInitDisplay.tsx
index 5cac7412..264eeeaf 100644
--- a/packages/cli/src/ui/components/ConfigInitDisplay.tsx
+++ b/packages/cli/src/ui/components/ConfigInitDisplay.tsx
@@ -11,15 +11,16 @@ import { useConfig } from '../contexts/ConfigContext.js';
 import { type McpClient, MCPServerStatus } from '@qwen-code/qwen-code-core';
 import { GeminiSpinner } from './GeminiRespondingSpinner.js';
 import { theme } from '../semantic-colors.js';
+import { t } from '../../i18n/index.js';
 
 export const ConfigInitDisplay = () => {
   const config = useConfig();
-  const [message, setMessage] = useState('Initializing...');
+  const [message, setMessage] = useState(t('Initializing...'));
 
   useEffect(() => {
     const onChange = (clients?: Map<string, McpClient>) => {
       if (!clients || clients.size === 0) {
-        setMessage(`Initializing...`);
+        setMessage(t('Initializing...'));
         return;
       }
       let connected = 0;
@@ -28,7 +29,12 @@ export const ConfigInitDisplay = () => {
           connected++;
         }
       }
-      setMessage(`Connecting to MCP servers... (${connected}/${clients.size})`);
+      setMessage(
+        t('Connecting to MCP servers... ({{connected}}/{{total}})', {
+          connected: String(connected),
+          total: String(clients.size),
+        }),
+      );
     };
 
     appEvents.on('mcp-client-update', onChange);
diff --git a/packages/cli/src/ui/components/ContextSummaryDisplay.tsx b/packages/cli/src/ui/components/ContextSummaryDisplay.tsx
index dba5c9ac..808c0ac7 100644
--- a/packages/cli/src/ui/components/ContextSummaryDisplay.tsx
+++ b/packages/cli/src/ui/components/ContextSummaryDisplay.tsx
@@ -13,6 +13,7 @@ import {
 } from '@qwen-code/qwen-code-core';
 import { useTerminalSize } from '../hooks/useTerminalSize.js';
 import { isNarrowWidth } from '../utils/isNarrowWidth.js';
+import { t } from '../../i18n/index.js';
 
 interface ContextSummaryDisplayProps {
   geminiMdFileCount: number;
@@ -50,9 +51,11 @@ export const ContextSummaryDisplay: React.FC<ContextSummaryDisplayProps> = ({
     if (openFileCount === 0) {
       return '';
     }
-    return `${openFileCount} open file${
-      openFileCount > 1 ? 's' : ''
-    } (ctrl+g to view)`;
+    const fileText =
+      openFileCount === 1
+        ? t('{{count}} open file', { count: String(openFileCount) })
+        : t('{{count}} open files', { count: String(openFileCount) });
+    return `${fileText} ${t('(ctrl+g to view)')}`;
   })();
 
   const geminiMdText = (() => {
@@ -61,9 +64,15 @@ export const ContextSummaryDisplay: React.FC<ContextSummaryDisplayProps> = ({
     }
     const allNamesTheSame = new Set(contextFileNames).size < 2;
     const name = allNamesTheSame ? contextFileNames[0] : 'context';
-    return `${geminiMdFileCount} ${name} file${
-      geminiMdFileCount > 1 ? 's' : ''
-    }`;
+    return geminiMdFileCount === 1
+      ? t('{{count}} {{name}} file', {
+          count: String(geminiMdFileCount),
+          name,
+        })
+      : t('{{count}} {{name}} files', {
+          count: String(geminiMdFileCount),
+          name,
+        });
   })();
 
   const mcpText = (() => {
@@ -73,15 +82,27 @@ export const ContextSummaryDisplay: React.FC<ContextSummaryDisplayProps> = ({
 
     const parts = [];
     if (mcpServerCount > 0) {
-      parts.push(
-        `${mcpServerCount} MCP server${mcpServerCount > 1 ? 's' : ''}`,
-      );
+      const serverText =
+        mcpServerCount === 1
+          ? t('{{count}} MCP server', { count: String(mcpServerCount) })
+          : t('{{count}} MCP servers', { count: String(mcpServerCount) });
+      parts.push(serverText);
     }
 
     if (blockedMcpServerCount > 0) {
-      let blockedText = `${blockedMcpServerCount} Blocked`;
+      let blockedText = t('{{count}} Blocked', {
+        count: String(blockedMcpServerCount),
+      });
       if (mcpServerCount === 0) {
-        blockedText += ` MCP server${blockedMcpServerCount > 1 ? 's' : ''}`;
+        const serverText =
+          blockedMcpServerCount === 1
+            ? t('{{count}} MCP server', {
+                count: String(blockedMcpServerCount),
+              })
+            : t('{{count}} MCP servers', {
+                count: String(blockedMcpServerCount),
+              });
+        blockedText += ` ${serverText}`;
       }
       parts.push(blockedText);
     }
@@ -89,9 +110,9 @@ export const ContextSummaryDisplay: React.FC<ContextSummaryDisplayProps> = ({
     // Add ctrl+t hint when MCP servers are available
     if (mcpServers && Object.keys(mcpServers).length > 0) {
       if (showToolDescriptions) {
-        text += ' (ctrl+t to toggle)';
+        text += ` ${t('(ctrl+t to toggle)')}`;
       } else {
-        text += ' (ctrl+t to view)';
+        text += ` ${t('(ctrl+t to view)')}`;
       }
     }
     return text;
@@ -102,7 +123,7 @@ export const ContextSummaryDisplay: React.FC<ContextSummaryDisplayProps> = ({
   if (isNarrow) {
     return (
       <Box flexDirection="column">
-        <Text color={theme.text.secondary}>Using:</Text>
+        <Text color={theme.text.secondary}>{t('Using:')}</Text>
         {summaryParts.map((part, index) => (
           <Text key={index} color={theme.text.secondary}>
             {'  '}- {part}
@@ -115,7 +136,7 @@ export const ContextSummaryDisplay: React.FC<ContextSummaryDisplayProps> = ({
   return (
     <Box>
       <Text color={theme.text.secondary}>
-        Using: {summaryParts.join(' | ')}
+        {t('Using:')} {summaryParts.join(' | ')}
       </Text>
     </Box>
   );
diff --git a/packages/cli/src/ui/components/Help.tsx b/packages/cli/src/ui/components/Help.tsx
index d73df720..f1f6fcf9 100644
--- a/packages/cli/src/ui/components/Help.tsx
+++ b/packages/cli/src/ui/components/Help.tsx
@@ -8,6 +8,7 @@ import type React from 'react';
 import { Box, Text } from 'ink';
 import { theme } from '../semantic-colors.js';
 import { type SlashCommand, CommandKind } from '../commands/types.js';
+import { t } from '../../i18n/index.js';
 
 interface Help {
   commands: readonly SlashCommand[];
@@ -23,46 +24,41 @@ export const Help: React.FC<Help> = ({ commands }) => (
   >
     {/* Basics */}
     <Text bold color={theme.text.primary}>
-      Basics:
+      {t('Basics:')}
     </Text>
     <Text color={theme.text.primary}>
       <Text bold color={theme.text.accent}>
-        Add context
+        {t('Add context')}
       </Text>
-      : Use{' '}
-      <Text bold color={theme.text.accent}>
-        @
-      </Text>{' '}
-      to specify files for context (e.g.,{' '}
-      <Text bold color={theme.text.accent}>
-        @src/myFile.ts
-      </Text>
-      ) to target specific files or folders.
+      :{' '}
+      {t(
+        'Use {{symbol}} to specify files for context (e.g., {{example}}) to target specific files or folders.',
+        {
+          symbol: t('@'),
+          example: t('@src/myFile.ts'),
+        },
+      )}
     </Text>
     <Text color={theme.text.primary}>
       <Text bold color={theme.text.accent}>
-        Shell mode
+        {t('Shell mode')}
       </Text>
-      : Execute shell commands via{' '}
-      <Text bold color={theme.text.accent}>
-        !
-      </Text>{' '}
-      (e.g.,{' '}
-      <Text bold color={theme.text.accent}>
-        !npm run start
-      </Text>
-      ) or use natural language (e.g.{' '}
-      <Text bold color={theme.text.accent}>
-        start server
-      </Text>
-      ).
+      :{' '}
+      {t(
+        'Execute shell commands via {{symbol}} (e.g., {{example1}}) or use natural language (e.g., {{example2}}).',
+        {
+          symbol: t('!'),
+          example1: t('!npm run start'),
+          example2: t('start server'),
+        },
+      )}
     </Text>
 
     <Box height={1} />
 
     {/* Commands */}
     <Text bold color={theme.text.primary}>
-      Commands:
+      {t('Commands:')}
     </Text>
     {commands
       .filter((command) => command.description && !command.hidden)
@@ -97,81 +93,81 @@ export const Help: React.FC<Help> = ({ commands }) => (
         {' '}
         !{' '}
       </Text>
-      - shell command
+      - {t('shell command')}
     </Text>
     <Text color={theme.text.primary}>
-      <Text color={theme.text.secondary}>[MCP]</Text> - Model Context Protocol
-      command (from external servers)
+      <Text color={theme.text.secondary}>[MCP]</Text> -{' '}
+      {t('Model Context Protocol command (from external servers)')}
     </Text>
 
     <Box height={1} />
 
     {/* Shortcuts */}
     <Text bold color={theme.text.primary}>
-      Keyboard Shortcuts:
+      {t('Keyboard Shortcuts:')}
     </Text>
     <Text color={theme.text.primary}>
       <Text bold color={theme.text.accent}>
         Alt+Left/Right
       </Text>{' '}
-      - Jump through words in the input
+      - {t('Jump through words in the input')}
     </Text>
     <Text color={theme.text.primary}>
       <Text bold color={theme.text.accent}>
         Ctrl+C
       </Text>{' '}
-      - Close dialogs, cancel requests, or quit application
+      - {t('Close dialogs, cancel requests, or quit application')}
     </Text>
     <Text color={theme.text.primary}>
       <Text bold color={theme.text.accent}>
         {process.platform === 'win32' ? 'Ctrl+Enter' : 'Ctrl+J'}
       </Text>{' '}
+      -{' '}
       {process.platform === 'linux'
-        ? '- New line (Alt+Enter works for certain linux distros)'
-        : '- New line'}
+        ? t('New line (Alt+Enter works for certain linux distros)')
+        : t('New line')}
     </Text>
     <Text color={theme.text.primary}>
       <Text bold color={theme.text.accent}>
         Ctrl+L
       </Text>{' '}
-      - Clear the screen
+      - {t('Clear the screen')}
     </Text>
     <Text color={theme.text.primary}>
       <Text bold color={theme.text.accent}>
         {process.platform === 'darwin' ? 'Ctrl+X / Meta+Enter' : 'Ctrl+X'}
       </Text>{' '}
-      - Open input in external editor
+      - {t('Open input in external editor')}
     </Text>
     <Text color={theme.text.primary}>
       <Text bold color={theme.text.accent}>
         Enter
       </Text>{' '}
-      - Send message
+      - {t('Send message')}
     </Text>
     <Text color={theme.text.primary}>
       <Text bold color={theme.text.accent}>
         Esc
       </Text>{' '}
-      - Cancel operation / Clear input (double press)
+      - {t('Cancel operation / Clear input (double press)')}
     </Text>
     <Text color={theme.text.primary}>
       <Text bold color={theme.text.accent}>
         Shift+Tab
       </Text>{' '}
-      - Cycle approval modes
+      - {t('Cycle approval modes')}
     </Text>
     <Text color={theme.text.primary}>
       <Text bold color={theme.text.accent}>
         Up/Down
       </Text>{' '}
-      - Cycle through your prompt history
+      - {t('Cycle through your prompt history')}
     </Text>
     <Box height={1} />
     <Text color={theme.text.primary}>
-      For a full list of shortcuts, see{' '}
-      <Text bold color={theme.text.accent}>
-        docs/keyboard-shortcuts.md
-      </Text>
+      {t('For a full list of shortcuts, see {{docPath}}', {
+        docPath: t('docs/keyboard-shortcuts.md'),
+      })}
     </Text>
   </Box>
 );
diff --git a/packages/cli/src/ui/components/ModelDialog.tsx b/packages/cli/src/ui/components/ModelDialog.tsx
index e5dac5fc..55b3300b 100644
--- a/packages/cli/src/ui/components/ModelDialog.tsx
+++ b/packages/cli/src/ui/components/ModelDialog.tsx
@@ -20,6 +20,7 @@ import {
   getAvailableModelsForAuthType,
   MAINLINE_CODER,
 } from '../models/availableModels.js';
+import { t } from '../../i18n/index.js';
 
 interface ModelDialogProps {
   onClose: () => void;
@@ -87,7 +88,7 @@ export function ModelDialog({ onClose }: ModelDialogProps): React.JSX.Element {
       padding={1}
       width="100%"
     >
-      <Text bold>Select Model</Text>
+      <Text bold>{t('Select Model')}</Text>
       <Box marginTop={1}>
         <DescriptiveRadioButtonSelect
           items={MODEL_OPTIONS}
@@ -97,7 +98,7 @@ export function ModelDialog({ onClose }: ModelDialogProps): React.JSX.Element {
         />
       </Box>
       <Box marginTop={1} flexDirection="column">
-        <Text color={theme.text.secondary}>(Press Esc to close)</Text>
+        <Text color={theme.text.secondary}>{t('(Press Esc to close)')}</Text>
       </Box>
     </Box>
   );
diff --git a/packages/cli/src/ui/components/messages/ToolConfirmationMessage.tsx b/packages/cli/src/ui/components/messages/ToolConfirmationMessage.tsx
index 6fea96cb..40934553 100644
--- a/packages/cli/src/ui/components/messages/ToolConfirmationMessage.tsx
+++ b/packages/cli/src/ui/components/messages/ToolConfirmationMessage.tsx
@@ -24,6 +24,7 @@ import { MaxSizedBox } from '../shared/MaxSizedBox.js';
 import { useKeypress } from '../../hooks/useKeypress.js';
 import { useSettings } from '../../contexts/SettingsContext.js';
 import { theme } from '../../semantic-colors.js';
+import { t } from '../../../i18n/index.js';
 
 export interface ToolConfirmationMessageProps {
   confirmationDetails: ToolCallConfirmationDetails;
@@ -105,17 +106,17 @@ export const ToolConfirmationMessage: React.FC<
     const compactOptions: Array<RadioSelectItem<ToolConfirmationOutcome>> = [
       {
         key: 'proceed-once',
-        label: 'Yes, allow once',
+        label: t('Yes, allow once'),
         value: ToolConfirmationOutcome.ProceedOnce,
       },
       {
         key: 'proceed-always',
-        label: 'Allow always',
+        label: t('Allow always'),
         value: ToolConfirmationOutcome.ProceedAlways,
       },
       {
         key: 'cancel',
-        label: 'No',
+        label: t('No'),
         value: ToolConfirmationOutcome.Cancel,
       },
     ];
@@ -123,7 +124,7 @@ export const ToolConfirmationMessage: React.FC<
     return (
       <Box flexDirection="column">
         <Box>
-          <Text wrap="truncate">Do you want to proceed?</Text>
+          <Text wrap="truncate">{t('Do you want to proceed?')}</Text>
         </Box>
         <Box>
           <RadioButtonSelect
@@ -185,37 +186,37 @@ export const ToolConfirmationMessage: React.FC<
           padding={1}
           overflow="hidden"
         >
-          <Text color={theme.text.primary}>Modify in progress: </Text>
+          <Text color={theme.text.primary}>{t('Modify in progress:')} </Text>
           <Text color={theme.status.success}>
-            Save and close external editor to continue
+            {t('Save and close external editor to continue')}
           </Text>
         </Box>
       );
     }
 
-    question = `Apply this change?`;
+    question = t('Apply this change?');
     options.push({
-      label: 'Yes, allow once',
+      label: t('Yes, allow once'),
       value: ToolConfirmationOutcome.ProceedOnce,
       key: 'Yes, allow once',
     });
     if (isTrustedFolder) {
       options.push({
-        label: 'Yes, allow always',
+        label: t('Yes, allow always'),
         value: ToolConfirmationOutcome.ProceedAlways,
         key: 'Yes, allow always',
       });
     }
     if ((!config.getIdeMode() || !isDiffingEnabled) && preferredEditor) {
       options.push({
-        label: 'Modify with external editor',
+        label: t('Modify with external editor'),
         value: ToolConfirmationOutcome.ModifyWithEditor,
         key: 'Modify with external editor',
       });
     }
 
     options.push({
-      label: 'No, suggest changes (esc)',
+      label: t('No, suggest changes (esc)'),
       value: ToolConfirmationOutcome.Cancel,
       key: 'No, suggest changes (esc)',
     });
@@ -232,21 +233,23 @@ export const ToolConfirmationMessage: React.FC<
     const executionProps =
       confirmationDetails as ToolExecuteConfirmationDetails;
 
-    question = `Allow execution of: '${executionProps.rootCommand}'?`;
+    question = t("Allow execution of: '{{command}}'?", {
+      command: executionProps.rootCommand,
+    });
     options.push({
-      label: 'Yes, allow once',
+      label: t('Yes, allow once'),
       value: ToolConfirmationOutcome.ProceedOnce,
       key: 'Yes, allow once',
     });
     if (isTrustedFolder) {
       options.push({
-        label: `Yes, allow always ...`,
+        label: t('Yes, allow always ...'),
         value: ToolConfirmationOutcome.ProceedAlways,
-        key: `Yes, allow always ...`,
+        key: 'Yes, allow always ...',
       });
     }
     options.push({
-      label: 'No, suggest changes (esc)',
+      label: t('No, suggest changes (esc)'),
       value: ToolConfirmationOutcome.Cancel,
       key: 'No, suggest changes (esc)',
     });
@@ -275,17 +278,17 @@ export const ToolConfirmationMessage: React.FC<
     question = planProps.title;
     options.push({
       key: 'proceed-always',
-      label: 'Yes, and auto-accept edits',
+      label: t('Yes, and auto-accept edits'),
       value: ToolConfirmationOutcome.ProceedAlways,
     });
     options.push({
       key: 'proceed-once',
-      label: 'Yes, and manually approve edits',
+      label: t('Yes, and manually approve edits'),
       value: ToolConfirmationOutcome.ProceedOnce,
     });
     options.push({
       key: 'cancel',
-      label: 'No, keep planning (esc)',
+      label: t('No, keep planning (esc)'),
       value: ToolConfirmationOutcome.Cancel,
     });
 
@@ -305,21 +308,21 @@ export const ToolConfirmationMessage: React.FC<
       infoProps.urls &&
       !(infoProps.urls.length === 1 && infoProps.urls[0] === infoProps.prompt);
 
-    question = `Do you want to proceed?`;
+    question = t('Do you want to proceed?');
     options.push({
-      label: 'Yes, allow once',
+      label: t('Yes, allow once'),
       value: ToolConfirmationOutcome.ProceedOnce,
       key: 'Yes, allow once',
     });
     if (isTrustedFolder) {
       options.push({
-        label: 'Yes, allow always',
+        label: t('Yes, allow always'),
         value: ToolConfirmationOutcome.ProceedAlways,
         key: 'Yes, allow always',
       });
     }
     options.push({
-      label: 'No, suggest changes (esc)',
+      label: t('No, suggest changes (esc)'),
       value: ToolConfirmationOutcome.Cancel,
       key: 'No, suggest changes (esc)',
     });
@@ -331,7 +334,7 @@ export const ToolConfirmationMessage: React.FC<
         </Text>
         {displayUrls && infoProps.urls && infoProps.urls.length > 0 && (
           <Box flexDirection="column" marginTop={1}>
-            <Text color={theme.text.primary}>URLs to fetch:</Text>
+            <Text color={theme.text.primary}>{t('URLs to fetch:')}</Text>
             {infoProps.urls.map((url) => (
               <Text key={url}>
                 {' '}
@@ -348,31 +351,46 @@ export const ToolConfirmationMessage: React.FC<
 
     bodyContent = (
       <Box flexDirection="column" paddingX={1} marginLeft={1}>
-        <Text color={theme.text.link}>MCP Server: {mcpProps.serverName}</Text>
-        <Text color={theme.text.link}>Tool: {mcpProps.toolName}</Text>
+        <Text color={theme.text.link}>
+          {t('MCP Server: {{server}}', { server: mcpProps.serverName })}
+        </Text>
+        <Text color={theme.text.link}>
+          {t('Tool: {{tool}}', { tool: mcpProps.toolName })}
+        </Text>
       </Box>
     );
 
-    question = `Allow execution of MCP tool "${mcpProps.toolName}" from server "${mcpProps.serverName}"?`;
+    question = t(
+      'Allow execution of MCP tool "{{tool}}" from server "{{server}}"?',
+      {
+        tool: mcpProps.toolName,
+        server: mcpProps.serverName,
+      },
+    );
     options.push({
-      label: 'Yes, allow once',
+      label: t('Yes, allow once'),
       value: ToolConfirmationOutcome.ProceedOnce,
       key: 'Yes, allow once',
     });
     if (isTrustedFolder) {
       options.push({
-        label: `Yes, always allow tool "${mcpProps.toolName}" from server "${mcpProps.serverName}"`,
+        label: t('Yes, always allow tool "{{tool}}" from server "{{server}}"', {
+          tool: mcpProps.toolName,
+          server: mcpProps.serverName,
+        }),
         value: ToolConfirmationOutcome.ProceedAlwaysTool, // Cast until types are updated
         key: `Yes, always allow tool "${mcpProps.toolName}" from server "${mcpProps.serverName}"`,
       });
       options.push({
-        label: `Yes, always allow all tools from server "${mcpProps.serverName}"`,
+        label: t('Yes, always allow all tools from server "{{server}}"', {
+          server: mcpProps.serverName,
+        }),
         value: ToolConfirmationOutcome.ProceedAlwaysServer,
         key: `Yes, always allow all tools from server "${mcpProps.serverName}"`,
       });
     }
     options.push({
-      label: 'No, suggest changes (esc)',
+      label: t('No, suggest changes (esc)'),
       value: ToolConfirmationOutcome.Cancel,
       key: 'No, suggest changes (esc)',
     });
diff --git a/packages/cli/src/ui/components/views/McpStatus.tsx b/packages/cli/src/ui/components/views/McpStatus.tsx
index b1dcfb50..eac11b57 100644
--- a/packages/cli/src/ui/components/views/McpStatus.tsx
+++ b/packages/cli/src/ui/components/views/McpStatus.tsx
@@ -14,6 +14,7 @@ import type {
   JsonMcpPrompt,
   JsonMcpTool,
 } from '../../types.js';
+import { t } from '../../../i18n/index.js';
 
 interface McpStatusProps {
   servers: Record<string, MCPServerConfig>;
@@ -47,13 +48,13 @@ export const McpStatus: React.FC<McpStatusProps> = ({
   if (serverNames.length === 0 && blockedServers.length === 0) {
     return (
       <Box flexDirection="column">
-        <Text>No MCP servers configured.</Text>
+        <Text>{t('No MCP servers configured.')}</Text>
         <Text>
-          Please view MCP documentation in your browser:{' '}
+          {t('Please view MCP documentation in your browser:')}{' '}
           <Text color={theme.text.link}>
             https://goo.gle/gemini-cli-docs-mcp
           </Text>{' '}
-          or use the cli /docs command
+          {t('or use the cli /docs command')}
         </Text>
       </Box>
     );
@@ -64,17 +65,19 @@ export const McpStatus: React.FC<McpStatusProps> = ({
       {discoveryInProgress && (
         <Box flexDirection="column" marginBottom={1}>
           <Text color={theme.status.warning}>
-            ⏳ MCP servers are starting up ({connectingServers.length}{' '}
-            initializing)...
+            {t('⏳ MCP servers are starting up ({{count}} initializing)...', {
+              count: String(connectingServers.length),
+            })}
           </Text>
           <Text color={theme.text.primary}>
-            Note: First startup may take longer. Tool availability will update
-            automatically.
+            {t(
+              'Note: First startup may take longer. Tool availability will update automatically.',
+            )}
           </Text>
         </Box>
       )}
 
-      <Text bold>Configured MCP servers:</Text>
+      <Text bold>{t('Configured MCP servers:')}</Text>
       <Box height={1} />
 
       {serverNames.map((serverName) => {
@@ -100,50 +103,61 @@ export const McpStatus: React.FC<McpStatusProps> = ({
         switch (status) {
           case MCPServerStatus.CONNECTED:
             statusIndicator = '🟢';
-            statusText = 'Ready';
+            statusText = t('Ready');
             statusColor = theme.status.success;
             break;
           case MCPServerStatus.CONNECTING:
             statusIndicator = '🔄';
-            statusText = 'Starting... (first startup may take longer)';
+            statusText = t('Starting... (first startup may take longer)');
             statusColor = theme.status.warning;
             break;
           case MCPServerStatus.DISCONNECTED:
           default:
             statusIndicator = '🔴';
-            statusText = 'Disconnected';
+            statusText = t('Disconnected');
             statusColor = theme.status.error;
             break;
         }
 
         let serverDisplayName = serverName;
         if (server.extensionName) {
-          serverDisplayName += ` (from ${server.extensionName})`;
+          serverDisplayName += ` ${t('(from {{extensionName}})', {
+            extensionName: server.extensionName,
+          })}`;
         }
 
         const toolCount = serverTools.length;
         const promptCount = serverPrompts.length;
         const parts = [];
         if (toolCount > 0) {
-          parts.push(`${toolCount} ${toolCount === 1 ? 'tool' : 'tools'}`);
+          parts.push(
+            toolCount === 1
+              ? t('{{count}} tool', { count: String(toolCount) })
+              : t('{{count}} tools', { count: String(toolCount) }),
+          );
         }
         if (promptCount > 0) {
           parts.push(
-            `${promptCount} ${promptCount === 1 ? 'prompt' : 'prompts'}`,
+            promptCount === 1
+              ? t('{{count}} prompt', { count: String(promptCount) })
+              : t('{{count}} prompts', { count: String(promptCount) }),
           );
         }
 
         const serverAuthStatus = authStatus[serverName];
         let authStatusNode: React.ReactNode = null;
         if (serverAuthStatus === 'authenticated') {
-          authStatusNode = <Text> (OAuth)</Text>;
+          authStatusNode = <Text> ({t('OAuth')})</Text>;
         } else if (serverAuthStatus === 'expired') {
           authStatusNode = (
-            <Text color={theme.status.error}> (OAuth expired)</Text>
+            <Text color={theme.status.error}> ({t('OAuth expired')})</Text>
           );
         } else if (serverAuthStatus === 'unauthenticated') {
           authStatusNode = (
-            <Text color={theme.status.warning}> (OAuth not authenticated)</Text>
+            <Text color={theme.status.warning}>
+              {' '}
+              ({t('OAuth not authenticated')})
+            </Text>
           );
         }
 
@@ -162,10 +176,12 @@ export const McpStatus: React.FC<McpStatusProps> = ({
               {authStatusNode}
             </Box>
             {status === MCPServerStatus.CONNECTING && (
-              <Text> (tools and prompts will appear when ready)</Text>
+              <Text> ({t('tools and prompts will appear when ready')})</Text>
             )}
             {status === MCPServerStatus.DISCONNECTED && toolCount > 0 && (
-              <Text> ({toolCount} tools cached)</Text>
+              <Text>
+                ({t('{{count}} tools cached', { count: String(toolCount) })})
+              </Text>
             )}
 
             {showDescriptions && server?.description && (
@@ -176,7 +192,7 @@ export const McpStatus: React.FC<McpStatusProps> = ({
 
             {serverTools.length > 0 && (
               <Box flexDirection="column" marginLeft={2}>
-                <Text color={theme.text.primary}>Tools:</Text>
+                <Text color={theme.text.primary}>{t('Tools:')}</Text>
                 {serverTools.map((tool) => {
                   const schemaContent =
                     showSchema &&
@@ -204,7 +220,9 @@ export const McpStatus: React.FC<McpStatusProps> = ({
                       )}
                       {schemaContent && (
                         <Box flexDirection="column" marginLeft={4}>
-                          <Text color={theme.text.secondary}>Parameters:</Text>
+                          <Text color={theme.text.secondary}>
+                            {t('Parameters:')}
+                          </Text>
                           <Text color={theme.text.secondary}>
                             {schemaContent}
                           </Text>
@@ -218,7 +236,7 @@ export const McpStatus: React.FC<McpStatusProps> = ({
 
             {serverPrompts.length > 0 && (
               <Box flexDirection="column" marginLeft={2}>
-                <Text color={theme.text.primary}>Prompts:</Text>
+                <Text color={theme.text.primary}>{t('Prompts:')}</Text>
                 {serverPrompts.map((prompt) => (
                   <Box key={prompt.name} flexDirection="column">
                     <Text>
@@ -244,35 +262,41 @@ export const McpStatus: React.FC<McpStatusProps> = ({
           <Text color={theme.status.error}>🔴 </Text>
           <Text bold>
             {server.name}
-            {server.extensionName ? ` (from ${server.extensionName})` : ''}
+            {server.extensionName
+              ? ` ${t('(from {{extensionName}})', {
+                  extensionName: server.extensionName,
+                })}`
+              : ''}
           </Text>
-          <Text> - Blocked</Text>
+          <Text> - {t('Blocked')}</Text>
         </Box>
       ))}
 
       {showTips && (
         <Box flexDirection="column" marginTop={1}>
-          <Text color={theme.text.accent}>💡 Tips:</Text>
+          <Text color={theme.text.accent}>{t('💡 Tips:')}</Text>
           <Text>
-            {'  '}- Use <Text color={theme.text.accent}>/mcp desc</Text> to show
-            server and tool descriptions
+            {'  '}- {t('Use')} <Text color={theme.text.accent}>/mcp desc</Text>{' '}
+            {t('to show server and tool descriptions')}
           </Text>
           <Text>
-            {'  '}- Use <Text color={theme.text.accent}>/mcp schema</Text> to
-            show tool parameter schemas
+            {'  '}- {t('Use')}{' '}
+            <Text color={theme.text.accent}>/mcp schema</Text>{' '}
+            {t('to show tool parameter schemas')}
           </Text>
           <Text>
-            {'  '}- Use <Text color={theme.text.accent}>/mcp nodesc</Text> to
-            hide descriptions
+            {'  '}- {t('Use')}{' '}
+            <Text color={theme.text.accent}>/mcp nodesc</Text>{' '}
+            {t('to hide descriptions')}
           </Text>
           <Text>
-            {'  '}- Use{' '}
+            {'  '}- {t('Use')}{' '}
             <Text color={theme.text.accent}>/mcp auth &lt;server-name&gt;</Text>{' '}
-            to authenticate with OAuth-enabled servers
+            {t('to authenticate with OAuth-enabled servers')}
           </Text>
           <Text>
-            {'  '}- Press <Text color={theme.text.accent}>Ctrl+T</Text> to
-            toggle tool descriptions on/off
+            {'  '}- {t('Press')} <Text color={theme.text.accent}>Ctrl+T</Text>{' '}
+            {t('to toggle tool descriptions on/off')}
           </Text>
         </Box>
       )}
diff --git a/packages/cli/src/ui/models/availableModels.ts b/packages/cli/src/ui/models/availableModels.ts
index 312c9bdc..9a04101f 100644
--- a/packages/cli/src/ui/models/availableModels.ts
+++ b/packages/cli/src/ui/models/availableModels.ts
@@ -5,6 +5,7 @@
  */
 
 import { AuthType, DEFAULT_QWEN_MODEL } from '@qwen-code/qwen-code-core';
+import { t } from '../../i18n/index.js';
 
 export type AvailableModel = {
   id: string;
@@ -20,14 +21,20 @@ export const AVAILABLE_MODELS_QWEN: AvailableModel[] = [
   {
     id: MAINLINE_CODER,
     label: MAINLINE_CODER,
-    description:
-      'The latest Qwen Coder model from Alibaba Cloud ModelStudio (version: qwen3-coder-plus-2025-09-23)',
+    get description() {
+      return t(
+        'The latest Qwen Coder model from Alibaba Cloud ModelStudio (version: qwen3-coder-plus-2025-09-23)',
+      );
+    },
   },
   {
     id: MAINLINE_VLM,
     label: MAINLINE_VLM,
-    description:
-      'The latest Qwen Vision model from Alibaba Cloud ModelStudio (version: qwen3-vl-plus-2025-09-23)',
+    get description() {
+      return t(
+        'The latest Qwen Vision model from Alibaba Cloud ModelStudio (version: qwen3-vl-plus-2025-09-23)',
+      );
+    },
     isVision: true,
   },
 ];
diff --git a/scripts/check-i18n.ts b/scripts/check-i18n.ts
new file mode 100644
index 00000000..a6c2ab07
--- /dev/null
+++ b/scripts/check-i18n.ts
@@ -0,0 +1,329 @@
+#!/usr/bin/env node
+
+/**
+ * @license
+ * Copyright 2025 Qwen
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import * as fs from 'node:fs';
+import * as path from 'node:path';
+import { fileURLToPath } from 'node:url';
+import { glob } from 'glob';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+interface CheckResult {
+  success: boolean;
+  errors: string[];
+  warnings: string[];
+  stats: {
+    totalKeys: number;
+    translatedKeys: number;
+    unusedKeys: string[];
+  };
+}
+
+/**
+ * Load translations from JS file
+ */
+async function loadTranslationsFile(
+  filePath: string,
+): Promise<Record<string, string>> {
+  try {
+    // Dynamic import for ES modules
+    const module = await import(filePath);
+    return module.default || module;
+  } catch (error) {
+    // Fallback: try reading as JSON if JS import fails
+    try {
+      const content = fs.readFileSync(
+        filePath.replace('.js', '.json'),
+        'utf-8',
+      );
+      return JSON.parse(content);
+    } catch {
+      throw error;
+    }
+  }
+}
+
+/**
+ * Extract string literal from code, handling escaped quotes
+ */
+function extractStringLiteral(
+  content: string,
+  startPos: number,
+  quote: string,
+): { value: string; endPos: number } | null {
+  let pos = startPos + 1; // Skip opening quote
+  let value = '';
+  let escaped = false;
+
+  while (pos < content.length) {
+    const char = content[pos];
+
+    if (escaped) {
+      if (char === '\\') {
+        value += '\\';
+      } else if (char === quote) {
+        value += quote;
+      } else if (char === 'n') {
+        value += '\n';
+      } else if (char === 't') {
+        value += '\t';
+      } else if (char === 'r') {
+        value += '\r';
+      } else {
+        value += char;
+      }
+      escaped = false;
+    } else if (char === '\\') {
+      escaped = true;
+    } else if (char === quote) {
+      return { value, endPos: pos };
+    } else {
+      value += char;
+    }
+
+    pos++;
+  }
+
+  return null; // String not closed
+}
+
+/**
+ * Extract all t() calls from source files
+ */
+async function extractUsedKeys(sourceDir: string): Promise<Set<string>> {
+  const usedKeys = new Set<string>();
+
+  // Find all TypeScript/TSX files
+  const files = await glob('**/*.{ts,tsx}', {
+    cwd: sourceDir,
+    ignore: [
+      '**/node_modules/**',
+      '**/dist/**',
+      '**/*.test.ts',
+      '**/*.test.tsx',
+    ],
+  });
+
+  for (const file of files) {
+    const filePath = path.join(sourceDir, file);
+    const content = fs.readFileSync(filePath, 'utf-8');
+
+    // Find all t( calls
+    const tCallRegex = /t\s*\(/g;
+    let match;
+    while ((match = tCallRegex.exec(content)) !== null) {
+      const startPos = match.index + match[0].length;
+      let pos = startPos;
+
+      // Skip whitespace
+      while (pos < content.length && /\s/.test(content[pos])) {
+        pos++;
+      }
+
+      if (pos >= content.length) continue;
+
+      const char = content[pos];
+      if (char === "'" || char === '"') {
+        const result = extractStringLiteral(content, pos, char);
+        if (result) {
+          usedKeys.add(result.value);
+        }
+      }
+    }
+  }
+
+  return usedKeys;
+}
+
+/**
+ * Check key-value consistency in en.js
+ */
+function checkKeyValueConsistency(
+  enTranslations: Record<string, string>,
+): string[] {
+  const errors: string[] = [];
+
+  for (const [key, value] of Object.entries(enTranslations)) {
+    if (key !== value) {
+      errors.push(`Key-value mismatch: "${key}" !== "${value}"`);
+    }
+  }
+
+  return errors;
+}
+
+/**
+ * Check if en.js and zh.js have matching keys
+ */
+function checkKeyMatching(
+  enTranslations: Record<string, string>,
+  zhTranslations: Record<string, string>,
+): string[] {
+  const errors: string[] = [];
+  const enKeys = new Set(Object.keys(enTranslations));
+  const zhKeys = new Set(Object.keys(zhTranslations));
+
+  // Check for keys in en but not in zh
+  for (const key of enKeys) {
+    if (!zhKeys.has(key)) {
+      errors.push(`Missing translation in zh.js: "${key}"`);
+    }
+  }
+
+  // Check for keys in zh but not in en
+  for (const key of zhKeys) {
+    if (!enKeys.has(key)) {
+      errors.push(`Extra key in zh.js (not in en.js): "${key}"`);
+    }
+  }
+
+  return errors;
+}
+
+/**
+ * Find unused translation keys
+ */
+function findUnusedKeys(allKeys: Set<string>, usedKeys: Set<string>): string[] {
+  const unused: string[] = [];
+
+  for (const key of allKeys) {
+    if (!usedKeys.has(key)) {
+      unused.push(key);
+    }
+  }
+
+  return unused.sort();
+}
+
+/**
+ * Main check function
+ */
+async function checkI18n(): Promise<CheckResult> {
+  const errors: string[] = [];
+  const warnings: string[] = [];
+
+  const localesDir = path.join(__dirname, '../packages/cli/src/i18n/locales');
+  const sourceDir = path.join(__dirname, '../packages/cli/src');
+
+  const enPath = path.join(localesDir, 'en.js');
+  const zhPath = path.join(localesDir, 'zh.js');
+
+  // Load translation files
+  let enTranslations: Record<string, string>;
+  let zhTranslations: Record<string, string>;
+
+  try {
+    enTranslations = await loadTranslationsFile(enPath);
+  } catch (error) {
+    errors.push(
+      `Failed to load en.js: ${error instanceof Error ? error.message : String(error)}`,
+    );
+    return {
+      success: false,
+      errors,
+      warnings,
+      stats: { totalKeys: 0, translatedKeys: 0, unusedKeys: [] },
+    };
+  }
+
+  try {
+    zhTranslations = await loadTranslationsFile(zhPath);
+  } catch (error) {
+    errors.push(
+      `Failed to load zh.js: ${error instanceof Error ? error.message : String(error)}`,
+    );
+    return {
+      success: false,
+      errors,
+      warnings,
+      stats: { totalKeys: 0, translatedKeys: 0, unusedKeys: [] },
+    };
+  }
+
+  // Check key-value consistency in en.js
+  const consistencyErrors = checkKeyValueConsistency(enTranslations);
+  errors.push(...consistencyErrors);
+
+  // Check key matching between en and zh
+  const matchingErrors = checkKeyMatching(enTranslations, zhTranslations);
+  errors.push(...matchingErrors);
+
+  // Extract used keys from source code
+  const usedKeys = await extractUsedKeys(sourceDir);
+
+  // Find unused keys
+  const enKeys = new Set(Object.keys(enTranslations));
+  const unusedKeys = findUnusedKeys(enKeys, usedKeys);
+
+  if (unusedKeys.length > 0) {
+    warnings.push(`Found ${unusedKeys.length} unused translation keys`);
+  }
+
+  const totalKeys = Object.keys(enTranslations).length;
+  const translatedKeys = Object.keys(zhTranslations).length;
+
+  return {
+    success: errors.length === 0,
+    errors,
+    warnings,
+    stats: {
+      totalKeys,
+      translatedKeys,
+      unusedKeys,
+    },
+  };
+}
+
+// Run checks
+checkI18n()
+  .then((result) => {
+    console.log('\n=== i18n Check Results ===\n');
+
+    console.log(`Total keys: ${result.stats.totalKeys}`);
+    console.log(`Translated keys: ${result.stats.translatedKeys}`);
+    console.log(
+      `Translation coverage: ${((result.stats.translatedKeys / result.stats.totalKeys) * 100).toFixed(1)}%\n`,
+    );
+
+    if (result.warnings.length > 0) {
+      console.log('⚠️  Warnings:');
+      result.warnings.forEach((warning) => console.log(`  - ${warning}`));
+      if (
+        result.stats.unusedKeys.length > 0 &&
+        result.stats.unusedKeys.length <= 10
+      ) {
+        console.log('\nUnused keys:');
+        result.stats.unusedKeys.forEach((key) => console.log(`  - "${key}"`));
+      } else if (result.stats.unusedKeys.length > 10) {
+        console.log(
+          `\nUnused keys (showing first 10 of ${result.stats.unusedKeys.length}):`,
+        );
+        result.stats.unusedKeys
+          .slice(0, 10)
+          .forEach((key) => console.log(`  - "${key}"`));
+      }
+      console.log();
+    }
+
+    if (result.errors.length > 0) {
+      console.log('❌ Errors:');
+      result.errors.forEach((error) => console.log(`  - ${error}`));
+      console.log();
+      process.exit(1);
+    }
+
+    if (result.success) {
+      console.log('✅ All checks passed!\n');
+      process.exit(0);
+    }
+  })
+  .catch((error) => {
+    console.error('❌ Fatal error:', error);
+    process.exit(1);
+  });
diff --git a/scripts/copy_files.js b/scripts/copy_files.js
index 6405a7df..9f1d318e 100644
--- a/scripts/copy_files.js
+++ b/scripts/copy_files.js
@@ -28,7 +28,7 @@ const targetDir = path.join('dist', 'src');
 
 const extensionsToCopy = ['.md', '.json', '.sb'];
 
-function copyFilesRecursive(source, target) {
+function copyFilesRecursive(source, target, rootSourceDir) {
   if (!fs.existsSync(target)) {
     fs.mkdirSync(target, { recursive: true });
   }
@@ -40,14 +40,15 @@ function copyFilesRecursive(source, target) {
     const targetPath = path.join(target, item.name);
 
     if (item.isDirectory()) {
-      copyFilesRecursive(sourcePath, targetPath);
+      copyFilesRecursive(sourcePath, targetPath, rootSourceDir);
     } else {
       const ext = path.extname(item.name);
       // Copy standard extensions, or .js files in i18n/locales directory
+      // Use path.relative for precise matching to avoid false positives
+      const relativePath = path.relative(rootSourceDir, sourcePath);
+      const normalizedPath = relativePath.replace(/\\/g, '/');
       const isLocaleJs =
-        ext === '.js' &&
-        (sourcePath.includes('i18n/locales') ||
-          sourcePath.includes(path.join('i18n', 'locales')));
+        ext === '.js' && normalizedPath.startsWith('i18n/locales/');
       if (extensionsToCopy.includes(ext) || isLocaleJs) {
         fs.copyFileSync(sourcePath, targetPath);
       }
@@ -60,7 +61,7 @@ if (!fs.existsSync(sourceDir)) {
   process.exit(1);
 }
 
-copyFilesRecursive(sourceDir, targetDir);
+copyFilesRecursive(sourceDir, targetDir, sourceDir);
 
 // Copy example extensions into the bundle.
 const packageName = path.basename(process.cwd());