add error/loading/404 boundaries, responsive tables, Metadata API

src/app/[locale]/team/page.tsx

@@ -17,6 +17,11 @@ import { InviteForm } from "@/components/team/invite-form";
  * `<TeamList>` and `<InviteForm>` client components handle live
  * updates after invites and refreshes.
  */
+export async function generateMetadata() {
+  const t = await getTranslations("common");
+  return { title: t("team") };
+}
+
 export default async function TeamPage() {
   const user = await getSessionUser();
   if (!user) redirect("/login");