Remove root page.tsx redirect so landing page renders at /

The root src/app/page.tsx was redirecting all visitors to /login,
preventing the (public)/page.tsx landing page from rendering at /.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/app/page.tsx

@@ -1,15 +0,0 @@
-'use client';
-
-import { useEffect } from 'react';
-import { useRouter } from 'next/navigation';
-
-export default function RootPage() {
-  const router = useRouter();
-
-  useEffect(() => {
-    // Redirect to login page
-    router.push('/login');
-  }, [router]);
-
-  return null;
-}