chore: 清理 18 处未使用导入、变量和函数

移除未使用的导入（getSubscriptionType、isEnvDefinedFalsy、
getClaudeConfigHomeDir 等）、未使用的常量（ACCENT_COLOR、
NAME_MATCH_BONUS、CLIPBOARD_THRESHOLD）和死函数
（getOpus41Option、pasteViaClipboard），
为未使用参数添加 _ 前缀。

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

src/utils/permissions/PermissionMode.ts

@@ -1,4 +1,3 @@
-import { feature } from 'bun:bundle'
 import z from 'zod/v4'
 import { PAUSE_ICON } from '../../constants/figures.js'
 // Types extracted to src/types/permissions.ts to break import cycles

src/utils/permissions/bypassPermissionsKillswitch.ts

@@ -1,6 +1,5 @@
 import { feature } from 'bun:bundle'
 import { useEffect, useRef } from 'react'
-import { useNotifications } from 'src/context/notifications.js'
 import { toError } from '../../utils/errors.js'
 import { logError } from '../../utils/log.js'
 import { getIsRemoteMode } from '../../bootstrap/state.js'

src/utils/permissions/getNextPermissionMode.ts

@@ -1,5 +1,4 @@
 import type { ToolPermissionContext } from '../../Tool.js'
-import { logForDebugging } from '../debug.js'
 import type { PermissionMode } from './PermissionMode.js'
 import { transitionPermissionMode } from './permissionSetup.js'
 

src/utils/permissions/permissionSetup.ts

@@ -874,7 +874,7 @@ export async function initializeToolPermissionContext({
   disallowedToolsCli,
   baseToolsCli,
   permissionMode,
-  allowDangerouslySkipPermissions,
+  allowDangerouslySkipPermissions: _allowDangerouslySkipPermissions,
   addDirs,
 }: {
   allowedToolsCli: string[]