.

components/ui/language-switcher.tsx

@@ -17,19 +17,30 @@ export function LanguageSwitcher() {
       const saved = localStorage.getItem('preferred-language')
       const isLocaleInPath = i18nConfig.locales.includes(currentLocale as any)
 
-      // ✅ 只有在 URL 中没有 locale 前缀时才写入 cookie 和 localStorage，避免错误覆盖
+      // 只有在 URL 中没有 locale 前缀时才写入 cookie 和 localStorage，避免错误覆盖
       if (!isLocaleInPath && saved !== currentLocale) {
         localStorage.setItem('preferred-language', currentLocale)
         document.cookie = `preferred-language=${currentLocale}; path=/; max-age=31536000`
+        
         console.log('[LanguageSwitcher] set preferred-language to:', currentLocale)
+        
+        // 确保 cookie 写入
+        const cookieValue = document.cookie
+        console.log('[LanguageSwitcher] Cookie after setting:', cookieValue)
       }
     }
   }, [currentLocale])
 
   const handleChange = (e: React.ChangeEvent<HTMLSelectElement>) => {
     const newLocale = e.target.value
+
+    // 写入 cookie
     document.cookie = `preferred-language=${newLocale}; path=/; max-age=31536000`
 
+    // 检查 cookie 是否正确写入
+    const cookieValue = document.cookie
+    console.log('[LanguageSwitcher] Cookie set to:', cookieValue)
+
     let segments = pathname === '/' ? [] : pathname.split('/').filter(Boolean)
     const isLocaleInPath = i18nConfig.locales.includes(segments[0] as any)
 
@@ -41,7 +52,7 @@ export function LanguageSwitcher() {
 
     const newPath = '/' + segments.join('/')
 
-    // ✅ 延迟跳转，确保 cookie 写入完成
+    // 延迟跳转，确保 cookie 写入完成
     setTimeout(() => {
       startTransition(() => {
         if (pathname !== newPath) {