Enhance marketing site routing and add ScrollToTop component. Updated Caddyfile to support SPA routing with fallback to marketing.html. Integrated ScrollToTop in MarketingApp for improved navigation experience.

frontend/Caddyfile.marketing

@@ -13,7 +13,10 @@
     }
     
     # Marketing site is the public default
+    # For SPA routing: serve the file if it exists, otherwise serve marketing.html
+    # This allows direct URL access (e.g., /product, /pricing) and browser back/forward navigation
     handle {
+        # Try to serve the requested file, fallback to marketing.html for all routes
         try_files {path} /marketing.html
         file_server
     }

frontend/src/marketing/MarketingApp.tsx

@@ -2,6 +2,7 @@ import React, { Suspense, lazy } from "react";
 import { Route, Routes } from "react-router-dom";
 import MarketingLayout from "./layout/MarketingLayout";
 import LoadingPage from "./components/LoadingPage";
+import { ScrollToTop } from "../components/common/ScrollToTop";
 
 const Home = lazy(() => import("./pages/Home"));
 const Product = lazy(() => import("./pages/Product"));
@@ -17,6 +18,7 @@ const Waitlist = lazy(() => import("./pages/Waitlist"));
 const MarketingApp: React.FC = () => {
   return (
     <MarketingLayout>
+      <ScrollToTop />
       <Suspense fallback={<LoadingPage />}>
         <Routes>
           <Route path="/" element={<Home />} />