create project

web/src/locales/index.ts

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+import { createI18n } from 'vue-i18n'
+import zhCN from './zh-CN'
+import enUS from './en-US'
+
+// 从 localStorage 获取保存的语言，默认为中文
+const getStoredLanguage = (): string => {
+  const stored = localStorage.getItem('language')
+  if (stored) return stored
+  
+  // 自动检测浏览器语言
+  const browserLang = navigator.language.toLowerCase()
+  if (browserLang.startsWith('zh')) return 'zh-CN'
+  return 'en-US'
+}
+
+const i18n = createI18n({
+  legacy: false, // 使用 Composition API 模式
+  locale: getStoredLanguage(),
+  fallbackLocale: 'zh-CN',
+  messages: {
+    'zh-CN': zhCN,
+    'en-US': enUS
+  }
+})
+
+export default i18n
+
+// 导出语言切换函数
+export const setLanguage = (lang: string) => {
+  i18n.global.locale.value = lang as any
+  localStorage.setItem('language', lang)
+}
+
+export const getCurrentLanguage = () => {
+  return i18n.global.locale.value
+}