修复中英文切换按钮显示提示词与系统显示相反的问题，

src/Dashboard.tsx

@@ -1312,7 +1312,7 @@ export default function Dashboard() {
                 className="flex items-center gap-2 px-3 py-2 hover:bg-gray-100 rounded-xl transition-colors group"
               >
                 <Globe className="w-4 h-4 text-gray-600 group-hover:rotate-12 transition-transform" />
-                <span className="text-sm text-gray-700">{i18n.language === 'zh' ? t('nav.switchToEnglish') : t('nav.switchToChinese')}</span>
+                <span className="text-sm text-gray-700">{i18n.language === 'zh' ? t('nav.switchToChinese') : t('nav.switchToEnglish')}</span>
               </button>
               
               {/* 消息通知 - 显示未读消息红点和消息列表 */}

src/views/Login.tsx

@@ -597,7 +597,7 @@ export default function Login() {
           className="flex items-center gap-2 px-4 py-2.5 bg-white/90 backdrop-blur-sm border border-gray-200/50 rounded-xl shadow-lg hover:shadow-xl hover:bg-white transition-all group"
         >
           <Globe className="w-4 h-4 text-blue-600 group-hover:rotate-12 transition-transform" />
-          <span className="text-sm text-gray-700">{i18n.language === 'zh' ? 'EN' : '中文'}</span>
+          <span className="text-sm text-gray-700">{i18n.language === 'zh' ? '中文' : 'EN'}</span>
         </button>
       </div>