weekly seo

greenlns-landing/app/layout.tsx

@@ -1,5 +1,6 @@
 import type { Metadata } from 'next'
 import { cookies } from 'next/headers'
+import { headers } from 'next/headers'
 import './globals.css'
 import { LangProvider } from '@/context/LangContext'
 import { siteConfig, hasIosStoreUrl } from '@/lib/site'
@@ -47,7 +48,9 @@ export const metadata: Metadata = {
 
 export default async function RootLayout({ children }: { children: React.ReactNode }) {
   const cookieStore = await cookies()
-  const lang = (cookieStore.get('lang')?.value ?? 'de') as 'de' | 'en' | 'es'
+  const headerStore = await headers()
+  const routeLang = headerStore.get('x-greenlens-lang')
+  const lang = (routeLang ?? cookieStore.get('lang')?.value ?? 'de') as 'de' | 'en' | 'es'
   const validLangs = ['de', 'en', 'es']
   const htmlLang = validLangs.includes(lang) ? lang : 'de'