feat: added privacy policy page

App.tsx

@@ -10,18 +10,40 @@ import PrivacyPolicy from './components/PrivacyPolicy';
 const App: React.FC = () => {
   const [currentPage, setCurrentPage] = useState<'home' | 'privacy'>('home');
 
+  useEffect(() => {
+    const handleHashChange = () => {
+      const hash = window.location.hash;
+      if (hash === '#privacy') {
+        setCurrentPage('privacy');
+      } else {
+        setCurrentPage('home');
+      }
+    };
+
+    // Initial check
+    handleHashChange();
+
+    // Listen for hash changes
+    window.addEventListener('hashchange', handleHashChange);
+    return () => window.removeEventListener('hashchange', handleHashChange);
+  }, []);
+
   useEffect(() => {
     window.scrollTo(0, 0);
   }, [currentPage]);
 
   const navigateToPrivacy = (e?: React.MouseEvent) => {
     e?.preventDefault();
-    setCurrentPage('privacy');
+    window.location.hash = 'privacy';
   };
 
   const navigateToHome = (e?: React.MouseEvent) => {
     e?.preventDefault();
-    setCurrentPage('home');
+    window.location.hash = '';
+    // If hash is empty, it might not trigger hashchange if it was already empty? 
+    // Actually assigning '' to hash usually removes the hash or makes it '#'.
+    // Better to explicitly set history or just ensure state updates if the listener fires.
+    // If we rely on the listener, updating hash is enough.
   };
 
   return (