feat: thêm tính năng ghi note cho Tour

frontend/src/App.tsx

@@ -4,6 +4,7 @@ import { ExploreMap } from './pages/ExploreMap';
 import { TourDetailPage } from './pages/TourDetailPage';
 import { SignupPage } from './pages/SignupPage';
 import { MyPhotosPage } from './pages/MyPhotosPage';
+import { MyNotePage } from './pages/MyNotePage';
 import { useTourStore } from './store/useTourStore';
 import { ConfirmProvider } from './hooks/useConfirm';
 import { NotificationProvider } from './hooks/useNotification';
@@ -13,7 +14,7 @@ function App() {
   const viewTourId = params.get('viewTour');
 
   const [user, setUser] = useState<any>(null);
-  const [currentPage, setCurrentPage] = useState<'landing' | 'explore' | 'tourDetail' | 'signup' | 'myPhotos'>(viewTourId ? 'tourDetail' : 'landing');
+  const [currentPage, setCurrentPage] = useState<'landing' | 'explore' | 'tourDetail' | 'signup' | 'myPhotos' | 'notes'>(viewTourId ? 'tourDetail' : 'landing');
   const [currentTourId, setCurrentTourId] = useState<string | null>(viewTourId);
   const [isPublicTourView, setIsPublicTourView] = useState(!!viewTourId);
 
@@ -94,10 +95,15 @@ function App() {
               tourId={currentTourId!} 
               onBack={handleBackFromTourDetail}
               isPublicView={isPublicTourView}
+              onOpenNotes={() => setCurrentPage('notes')}
             />
           );
         }
 
+        if (currentPage === 'notes') {
+          return <MyNotePage onBack={() => setCurrentPage('tourDetail')} />;
+        }
+
         if (currentPage === 'explore') {
           return (
             <ExploreMap