Move admin area to root subdomain

components/layout/site-header.tsx

@@ -13,6 +13,7 @@ import { SiteLogo } from "@/components/layout/site-logo";
 import { SoundToggle } from "@/components/sound-toggle";
 import { ThemeToggle } from "@/components/theme-toggle";
 import { Button } from "@/components/ui/button";
+import { buildAdminUrl } from "@/lib/admin-routing";
 import { getLocalizedPath, stripLocalePrefix } from "@/lib/locale";
 import { toast } from "@/lib/toast";
 import { cn } from "@/lib/utils";
@@ -314,7 +315,7 @@ export function SiteHeader({
               />
               {isAdmin ? (
                 <Button asChild variant="ghost" size="icon" className={desktopControlButtonClassName}>
-                  <Link href="/root" aria-label={t("root")}>
+                  <Link href={buildAdminUrl()} aria-label={t("root")}>
                     <LayoutDashboard className="h-4 w-4 transition-transform duration-300 ease-out hover:scale-110" />
                   </Link>
                 </Button>
@@ -464,7 +465,7 @@ export function SiteHeader({
                       />
                       {isAdmin ? (
                         <Button asChild variant="ghost" size="icon" className={mobileControlButtonClassName}>
-                          <Link href="/root" aria-label={t("root")} onClick={() => setIsOpen(false)}>
+                          <Link href={buildAdminUrl()} aria-label={t("root")} onClick={() => setIsOpen(false)}>
                             <LayoutDashboard className="h-4 w-4 transition-transform duration-300 ease-out hover:scale-110" />
                           </Link>
                         </Button>