Revert the public /LandingPage route

Rolls src/App.jsx back to 3c649fc, so every route including /LandingPage sits
behind the Base44 auth gate again. Reverts:

  015da4e  Render the landing page without a Base44 session

Completes the rollback of the public-without-login routes; the blank-page fix
in 3c649fc is left in place, since that is what makes the deploy render at all.

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

src/App.jsx

@@ -50,34 +50,10 @@ const LayoutWrapper = ({ children, currentPageName }) => Layout ?
   <Layout currentPageName={currentPageName}>{children}</Layout>
   : <>{children}</>;
 
-// Routes that render for anyone, signed in or not. LandingPage is pure marketing
-// markup — it reads no entities and never touches useAuth — so the only thing the
-// auth gate ever did for it was bounce visitors to a Google login before they
-// could read what the product is. Its CTAs point at /Dashboard, which is still
-// gated, so signing in stays one click away.
-const PUBLIC_ROUTES = new Set(['/LandingPage']);
-
-const isPublicRoute = (pathname) => {
-  // Tolerate a trailing slash so /LandingPage/ isn't quietly sent to login.
-  const normalized = pathname.length > 1 ? pathname.replace(/\/+$/, '') : pathname;
-  return PUBLIC_ROUTES.has(normalized);
-};
-
 const AuthenticatedApp = () => {
   const { isLoadingAuth, isLoadingPublicSettings, authError, isAuthenticated, navigateToLogin } = useAuth();
   const location = useLocation();
 
-  // Ahead of both gates below. The spinner would stall this page on a network
-  // round-trip it has no use for, and the auth gate would redirect away from it —
-  // either one defeats the point of a public page.
-  if (isPublicRoute(location.pathname)) {
-    return (
-      <Routes>
-        <Route path="/LandingPage" element={<LandingPage />} />
-      </Routes>
-    );
-  }
-
   // Show loading spinner while checking app public settings or auth
   if (isLoadingPublicSettings || isLoadingAuth) {
     return (
@@ -116,6 +92,14 @@ const AuthenticatedApp = () => {
 
   // Render the main app
 
+  if (location.pathname === '/LandingPage') {
+    return (
+      <Routes>
+        <Route path="/LandingPage" element={<LandingPage />} />
+      </Routes>
+    );
+  }
+
   return (
     <LayoutWrapper currentPageName={mainPageKey}>
       <Routes>