feat(web): i18n (#12471)

packages/console/app/src/routes/docs/[...path].ts

@@ -1,12 +1,18 @@
 import type { APIEvent } from "@solidjs/start/server"
+import { localeFromCookieHeader, tag } from "~/lib/language"
 
 async function handler(evt: APIEvent) {
   const req = evt.request.clone()
   const url = new URL(req.url)
   const targetUrl = `https://docs.opencode.ai${url.pathname}${url.search}`
+
+  const headers = new Headers(req.headers)
+  const locale = localeFromCookieHeader(req.headers.get("cookie"))
+  if (locale) headers.set("accept-language", tag(locale))
+
   const response = await fetch(targetUrl, {
     method: req.method,
-    headers: req.headers,
+    headers,
     body: req.body,
   })
   return response