refactor(i18n): 移除 chrome.i18n 国际化，统一使用中文硬编码

移除 chromeI18n 工具、_locales 翻译文件和 manifest default_locale 配置，
将所有 UI 文案改为直接硬编码中文，并更新相关测试与文档。

src/pages/RightClickRestorer/index.tsx

@@ -3,17 +3,15 @@ import { Label } from '@/components/ui/label';
 import { Badge } from '@/components/ui/badge';
 import { Shield, ShieldCheck, MousePointerClick, AlertTriangle } from 'lucide-react';
 import { useRightClickRestorer } from './useRightClickRestorer';
-import { useI18n } from '@/utils/chromeI18n';
 
 export default function Index() {
-  const { t } = useI18n('rightClickRestorer');
   const { domain, isLoading, isUnlocked, isUnsupported, unlock } = useRightClickRestorer();
 
   if (isLoading) {
     return (
       <div className="flex flex-col items-center justify-center py-12 min-h-[280px] w-full">
         <span className="text-xs text-muted-foreground mt-2 font-medium tracking-wide">
-          {t('rightClickRestorer:loading')}
+          {'正在加载...'}
         </span>
       </div>
     );
@@ -24,7 +22,7 @@ export default function Index() {
       {/* Current Domain */}
       <div className="w-full rounded-xl border border-border bg-card text-card-foreground shadow-sm overflow-hidden">
         <div className="p-4">
-          <Label className="text-sm font-medium">{t('rightClickRestorer:currentDomain')}</Label>
+          <Label className="text-sm font-medium">{'当前域名'}</Label>
           <div className="mt-2 flex items-center justify-between gap-2">
             <code className="text-sm bg-muted px-2 py-1 rounded truncate min-w-0 flex-1">
               {domain || '—'}
@@ -32,17 +30,17 @@ export default function Index() {
             {isUnsupported ? (
               <Badge variant="destructive" className="gap-1 shrink-0">
                 <AlertTriangle className="h-3 w-3" />
-                {t('rightClickRestorer:unsupported')}
+                {'不支持'}
               </Badge>
             ) : isUnlocked ? (
               <Badge variant="default" className="gap-1 bg-green-600 hover:bg-green-700 shrink-0">
                 <ShieldCheck className="h-3 w-3" />
-                {t('rightClickRestorer:statusUnlocked')}
+                {'已解锁'}
               </Badge>
             ) : (
               <Badge variant="secondary" className="gap-1 shrink-0">
                 <Shield className="h-3 w-3" />
-                {t('rightClickRestorer:statusLocked')}
+                {'未解锁'}
               </Badge>
             )}
           </div>
@@ -55,16 +53,18 @@ export default function Index() {
           {isUnsupported ? (
             <>
               <p className="text-xs text-muted-foreground">
-                {t('rightClickRestorer:unsupportedDesc')}
+                {'当前页面为浏览器内部页面或扩展页面，无法解锁右键功能。请切换到普通网页后重试。'}
               </p>
               <Button className="w-full gap-2" disabled variant="secondary">
                 <AlertTriangle className="h-4 w-4" />
-                {t('rightClickRestorer:unsupported')}
+                {'不支持'}
               </Button>
             </>
           ) : (
             <>
-              <p className="text-xs text-muted-foreground">{t('rightClickRestorer:unlockDesc')}</p>
+              <p className="text-xs text-muted-foreground">
+                {'点击下方按钮，为当前网站临时解锁右键菜单。刷新页面后需要重新解锁。'}
+              </p>
               <Button
                 className="w-full gap-2"
                 onClick={() => void unlock()}
@@ -72,9 +72,7 @@ export default function Index() {
                 variant={isUnlocked ? 'secondary' : 'default'}
               >
                 <MousePointerClick className="h-4 w-4" />
-                {isUnlocked
-                  ? t('rightClickRestorer:alreadyUnlocked')
-                  : t('rightClickRestorer:unlockBtn')}
+                {isUnlocked ? '右键已解锁' : '解锁当前网站右键'}
               </Button>
             </>
           )}