Let welcome header wrap on narrow screens

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/components/welcome/welcome-page.tsx

@@ -113,15 +113,15 @@ export function WelcomePage() {
   return (
     <div className="min-h-screen flex flex-col">
       <header
-        className="flex items-center justify-between gap-3 px-4 sm:px-8 py-3.5"
+        className="flex flex-wrap items-center justify-between gap-3 px-4 sm:px-8 py-3.5"
         style={{ borderBottom: "2px solid var(--border)" }}
       >
-        <span className="font-bold text-lg">Second Brain</span>
+        <span className="font-bold text-lg whitespace-nowrap">Second Brain</span>
         <nav className="flex gap-3">
-          <Link href="/login" className="btn-aubade text-sm">
+          <Link href="/login" className="btn-aubade text-sm whitespace-nowrap">
             Войти
           </Link>
-          <Link href="/register" className="btn-aubade btn-aubade-accent text-sm">
+          <Link href="/register" className="btn-aubade btn-aubade-accent text-sm whitespace-nowrap">
             Зарегистрироваться
           </Link>
         </nav>