feat(spa): add wishlist functionality with localStorage and UI integration

apps/spa/src/App.tsx

@@ -17,6 +17,7 @@ import CheckoutPage from './pages/CheckoutPage'
 import CouponsPage from './pages/CouponsPage'
 import OrderSuccessPage from './pages/OrderSuccessPage'
 import TrackOrderPage from './pages/TrackOrderPage'
+import WishlistPage from './pages/WishlistPage'
 import CartDrawer from './components/CartDrawer'
 
 function App() {
@@ -42,6 +43,7 @@ function App() {
         <Route path="/checkout" element={<CheckoutPage />} />
         <Route path="/order/:id" element={<OrderSuccessPage />} />
         <Route path="/track" element={<TrackOrderPage />} />
+        <Route path="/wishlist" element={<WishlistPage />} />
         <Route path="/search" element={<SearchPage />} />
         <Route path="/faq" element={<FaqPage />} />
         <Route path="/scent-guide" element={<ScentGuidePage />} />