chore: 清理 src 下 113 项未使用导入和死代码

删除未使用的文件（BuiltinStatusLine.tsx、4 个重复的 .ts stub）、
移除约 55 个文件中未使用的 React 导入、
清理约 50 处未使用的导入/变量/参数。
净减少 ~296 行代码，precheck 4077 测试全部通过。

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/hooks/notifs/useCanSwitchToExistingSubscription.tsx

@@ -1,4 +1,3 @@
-import * as React from 'react';
 import { getOauthProfileFromApiKey } from 'src/services/oauth/getOauthProfile.js';
 import { isClaudeAISubscriber } from 'src/utils/auth.js';
 import { Text } from '@anthropic/ink';

src/hooks/notifs/useIDEStatusIndicator.tsx

@@ -1,4 +1,4 @@
-import React, { useEffect, useRef } from 'react';
+import { useEffect, useRef } from 'react';
 import { useNotifications } from 'src/context/notifications.js';
 import { Text } from '@anthropic/ink';
 import type { MCPServerConnection } from 'src/services/mcp/types.js';

src/hooks/notifs/useMcpConnectivityStatus.tsx

@@ -1,4 +1,3 @@
-import * as React from 'react';
 import { useEffect } from 'react';
 import { useNotifications } from 'src/context/notifications.js';
 import { getIsRemoteMode } from '../../bootstrap/state.js';

src/hooks/notifs/usePluginAutoupdateNotification.tsx

@@ -1,4 +1,3 @@
-import * as React from 'react';
 import { useEffect, useState } from 'react';
 import { getIsRemoteMode } from '../../bootstrap/state.js';
 import { useNotifications } from '../../context/notifications.js';

src/hooks/notifs/usePluginInstallationStatus.tsx

@@ -1,4 +1,3 @@
-import * as React from 'react';
 import { useEffect, useMemo } from 'react';
 import { getIsRemoteMode } from '../../bootstrap/state.js';
 import { useNotifications } from '../../context/notifications.js';

src/hooks/notifs/useRateLimitWarningNotification.tsx

@@ -1,4 +1,3 @@
-import * as React from 'react';
 import { useEffect, useMemo, useRef, useState } from 'react';
 import { useNotifications } from 'src/context/notifications.js';
 import { Text } from '@anthropic/ink';

src/hooks/useArrowKeyHistory.tsx

@@ -1,4 +1,4 @@
-import React, { useCallback, useRef, useState } from 'react';
+import { useCallback, useRef, useState } from 'react';
 import { getModeFromInput } from 'src/components/PromptInput/inputModes.js';
 import { useNotifications } from 'src/context/notifications.js';
 import { ConfigurableShortcutHint } from '../components/ConfigurableShortcutHint.js';

src/hooks/useChromeExtensionNotification.tsx

@@ -1,4 +1,3 @@
-import * as React from 'react';
 import { Text } from '@anthropic/ink';
 import { isClaudeAISubscriber } from '../utils/auth.js';
 import { isChromeExtensionInstalled, shouldEnableClaudeInChrome } from '../utils/claudeInChrome/setup.js';

src/hooks/useMergedTools.ts

@@ -2,7 +2,6 @@
 import { useMemo } from 'react'
 import type { Tools, ToolPermissionContext } from '../Tool.js'
 import { assembleToolPool } from '../tools.js'
-import { useAppState } from '../state/AppState.js'
 import { mergeAndFilterTools } from '../utils/toolPool.js'
 
 /**

src/hooks/useOfficialMarketplaceNotification.tsx

@@ -1,4 +1,3 @@
-import * as React from 'react';
 import type { Notification } from '../context/notifications.js';
 import { Text } from '@anthropic/ink';
 import { logForDebugging } from '../utils/debug.js';

src/hooks/useSSHSession.ts

@@ -21,10 +21,7 @@ import {
   isSessionEndMessage,
 } from '../remote/sdkMessageAdapter.js'
 import type { SSHSession } from '../ssh/createSSHSession.js'
-import type {
-  SSHSessionManager,
-  SSHPermissionRequest,
-} from '../ssh/SSHSessionManager.js'
+import type { SSHSessionManager } from '../ssh/SSHSessionManager.js'
 import type { Tool } from '../Tool.js'
 import { findToolByName } from '../Tool.js'
 import type { Message as MessageType } from '../types/message.js'

src/hooks/useTypeahead.tsx

@@ -1,4 +1,3 @@
-import * as React from 'react';
 import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
 import { useNotifications } from 'src/context/notifications.js';
 import { Text } from '@anthropic/ink';