refactor: 迁移 i18n 系统从 react-i18next 到 chrome.i18n

- 移除 react-i18next、i18next 及相关依赖
- 删除旧的 i18n/ 目录和 useLazyTranslation 工具
- 新增 utils/chromeI18n.ts 类型安全 wrapper（useI18n Hook + getMessage）
- 生成 public/_locales/{zh,en}/messages.json（298 个翻译 key）
- 批量更新 39+ 组件文件的导入和翻译调用
- 转换翻译键格式：namespace:key → namespace_key
- 修复 ErrorBoundary/PageErrorBoundary 从 withTranslation HOC 改为直接调用 getMessage
- 更新 vitest.setup.ts mock 加载实际翻译文本
- 修复 11 个测试文件的断言以匹配中文翻译
- TypeScript、ESLint、547 项测试全部通过

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

pages/StorageCleaner/AutoRefreshToggle.tsx

@@ -14,7 +14,7 @@
  */
 
 import React from 'react';
-import { useLazyTranslation } from '@/utils/useLazyTranslation';
+import { useI18n } from '@/utils/chromeI18n';
 import { cn } from '@/lib/utils';
 import { Switch } from '@/components/ui/switch';
 import { Label } from '@/components/ui/label';
@@ -43,7 +43,7 @@ export default function AutoRefreshToggle({
   className,
   ...props
 }: AutoRefreshToggleProps) {
-  const { t } = useLazyTranslation('storageCleaner');
+  const { t } = useI18n('storageCleaner');
 
   return (
     <div

pages/StorageCleaner/CleaningResult.tsx

@@ -2,7 +2,7 @@ import React from 'react';
 import { CheckCircle, XCircle } from 'lucide-react';
 import type { CleaningResult as CleaningResultType } from '@/types/storage';
 import { formatCleaningResult } from '@/utils/storageCleaner';
-import { useLazyTranslation } from '@/utils/useLazyTranslation';
+import { useI18n } from '@/utils/chromeI18n';
 import { cn } from '@/lib/utils'; // 1. 引入 shadcn 核心类名合并工具
 
 interface CleaningResultProps extends React.HTMLAttributes<HTMLDivElement> {
@@ -10,7 +10,7 @@ interface CleaningResultProps extends React.HTMLAttributes<HTMLDivElement> {
 }
 
 export default function CleaningResult({ result, className, ...props }: CleaningResultProps) {
-  const { t } = useLazyTranslation('storageCleaner');
+  const { t } = useI18n('storageCleaner');
 
   if (!result) return null;
 

pages/StorageCleaner/ErrorDisplay.tsx

@@ -1,5 +1,5 @@
 import { AlertCircle } from 'lucide-react';
-import { useLazyTranslation } from '@/utils/useLazyTranslation';
+import { useI18n } from '@/utils/chromeI18n';
 import { cn } from '@/lib/utils';
 
 interface ErrorDisplayProps extends React.HTMLAttributes<HTMLDivElement> {
@@ -7,7 +7,7 @@ interface ErrorDisplayProps extends React.HTMLAttributes<HTMLDivElement> {
 }
 
 export default function ErrorDisplay({ error, className, ...props }: ErrorDisplayProps) {
-  const { t } = useLazyTranslation('storageCleaner');
+  const { t } = useI18n('storageCleaner');
 
   return (
     // 1. 精简层级：单层外壳直接搞定居中、响应式高度与外部类名扩展

pages/StorageCleaner/OptionItem.tsx

@@ -1,6 +1,6 @@
 import React from 'react';
 import { formatSize } from '@/utils/storageCleaner';
-import { useLazyTranslation } from '@/utils/useLazyTranslation';
+import { useI18n } from '@/utils/chromeI18n';
 import { cn } from '@/lib/utils';
 // 引入官方的 Checkbox 原子组件
 import { Checkbox } from '@/components/ui/checkbox';
@@ -22,7 +22,7 @@ export default function OptionItem({
   className,
   ...props
 }: OptionItemProps) {
-  const { t } = useLazyTranslation('storageCleaner');
+  const { t } = useI18n('storageCleaner');
 
   return (
     <div

pages/StorageCleaner/StorageCleanerConfirm.tsx

@@ -10,7 +10,7 @@ import {
 import { Badge } from '@/components/ui/badge';
 import { AlertTriangle } from 'lucide-react';
 import type { StorageCleanerOptions } from '@/types/storage';
-import { useLazyTranslation } from '@/utils/useLazyTranslation';
+import { useI18n } from '@/utils/chromeI18n';
 import { cn } from '@/lib/utils';
 
 export interface StorageCleanerConfirmProps {
@@ -26,7 +26,7 @@ export function StorageCleanerConfirm({
   onConfirm,
   options,
 }: StorageCleanerConfirmProps) {
-  const { t } = useLazyTranslation('storageCleaner');
+  const { t } = useI18n('storageCleaner');
 
   const selectedOptions = Object.entries(options)
     .filter(([_, value]) => value)
@@ -99,7 +99,7 @@ export function StorageCleanerConfirm({
             onClick={onClose}
             className="w-full text-xs font-semibold shadow-sm h-9 text-muted-foreground hover:text-foreground"
           >
-            {t('common:buttons.cancel')}
+            {t('common_buttons_cancel')}
           </Button>
         </DialogFooter>
       </DialogContent>

pages/StorageCleaner/StorageOptionsGrid.tsx

@@ -1,7 +1,7 @@
 import React from 'react';
 import type { StorageCleanerOptions } from '@/types/storage';
 import OptionItem from './OptionItem';
-import { useLazyTranslation } from '@/utils/useLazyTranslation';
+import { useI18n } from '@/utils/chromeI18n';
 import { cn } from '@/lib/utils';
 // 1. 引入官方标准的 Checkbox 原子组件
 import { Checkbox } from '@/components/ui/checkbox';
@@ -26,7 +26,7 @@ export default function StorageOptionsGrid({
   className,
   ...props
 }: StorageOptionsGridProps) {
-  const { t } = useLazyTranslation('storageCleaner');
+  const { t } = useI18n('storageCleaner');
 
   const optionKeys: { key: keyof StorageCleanerOptions; isCount?: boolean }[] = [
     { key: 'localStorage' },

pages/StorageCleaner/index.tsx

@@ -6,10 +6,10 @@ import StorageOptionsGrid from './StorageOptionsGrid';
 import AutoRefreshToggle from './AutoRefreshToggle';
 import ErrorDisplay from './ErrorDisplay';
 import CleaningResult from './CleaningResult';
-import { useLazyTranslation } from '@/utils/useLazyTranslation';
+import { useI18n } from '@/utils/chromeI18n';
 
 export default function Index() {
-  const { t } = useLazyTranslation('storageCleaner');
+  const { t } = useI18n('storageCleaner');
 
   const {
     error,

pages/StorageCleaner/useStorageCleaner.ts

@@ -17,7 +17,7 @@ import {
   isRestrictedUrl,
 } from '@/utils/storageCleaner';
 import { MessageAction, sendMessage } from '@/utils/messages';
-import { useLazyTranslation } from '@/utils/useLazyTranslation';
+import { useI18n } from '@/utils/chromeI18n';
 import { toast } from 'sonner'; // 1. 直接引用 shadcn 推荐的 Sonner 单例通知，踢出回调依赖
 
 const DEFAULT_OPTIONS: StorageCleanerOptions = {
@@ -56,7 +56,7 @@ export interface UseStorageCleanerReturn {
 }
 
 export function useStorageCleaner(): UseStorageCleanerReturn {
-  const { t } = useLazyTranslation(['storageCleaner', 'common']);
+  const { t } = useI18n(['storageCleaner', 'common']);
   const [domain, setDomain] = useState<string>('');
   const [error, setError] = useState<string>('');
   const [isInitializing, setIsInitializing] = useState<boolean>(true);