Add menu item customization/detail pages and configurable currency formatting

Lets customers pick options on a menu item detail page before adding to the
basket, and makes displayed prices respect a configurable currency/locale
via VITE_CURRENCY/VITE_LOCALE. Also crossfades the basket's empty/filled
states with AnimatePresence in wait mode instead of animating both at once.

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

src/routeTree.gen.ts

@@ -13,6 +13,7 @@ import { Route as IndexRouteImport } from './routes/index'
 import { Route as BasketRouteImport } from './routes/basket'
 import { Route as LoginRouteImport } from './routes/login'
 import { Route as SignupRouteImport } from './routes/signup'
+import { Route as ItemsMenuItemIdRouteImport } from './routes/items/$menuItemId'
 import { Route as OrdersIndexRouteImport } from './routes/orders/index'
 import { Route as OrdersOrderIdRouteImport } from './routes/orders/$orderId'
 import { Route as ApiAuthSplatRouteImport } from './routes/api/auth/$'
@@ -37,6 +38,11 @@ const SignupRoute = SignupRouteImport.update({
   path: '/signup',
   getParentRoute: () => rootRouteImport,
 } as any)
+const ItemsMenuItemIdRoute = ItemsMenuItemIdRouteImport.update({
+  id: '/items/$menuItemId',
+  path: '/items/$menuItemId',
+  getParentRoute: () => rootRouteImport,
+} as any)
 const OrdersIndexRoute = OrdersIndexRouteImport.update({
   id: '/orders/',
   path: '/orders/',
@@ -58,6 +64,7 @@ export interface FileRoutesByFullPath {
   '/basket': typeof BasketRoute
   '/login': typeof LoginRoute
   '/signup': typeof SignupRoute
+  '/items/$menuItemId': typeof ItemsMenuItemIdRoute
   '/orders/$orderId': typeof OrdersOrderIdRoute
   '/orders/': typeof OrdersIndexRoute
   '/api/auth/$': typeof ApiAuthSplatRoute
@@ -67,6 +74,7 @@ export interface FileRoutesByTo {
   '/basket': typeof BasketRoute
   '/login': typeof LoginRoute
   '/signup': typeof SignupRoute
+  '/items/$menuItemId': typeof ItemsMenuItemIdRoute
   '/orders/$orderId': typeof OrdersOrderIdRoute
   '/orders': typeof OrdersIndexRoute
   '/api/auth/$': typeof ApiAuthSplatRoute
@@ -77,6 +85,7 @@ export interface FileRoutesById {
   '/basket': typeof BasketRoute
   '/login': typeof LoginRoute
   '/signup': typeof SignupRoute
+  '/items/$menuItemId': typeof ItemsMenuItemIdRoute
   '/orders/$orderId': typeof OrdersOrderIdRoute
   '/orders/': typeof OrdersIndexRoute
   '/api/auth/$': typeof ApiAuthSplatRoute
@@ -88,6 +97,7 @@ export interface FileRouteTypes {
     | '/basket'
     | '/login'
     | '/signup'
+    | '/items/$menuItemId'
     | '/orders/$orderId'
     | '/orders/'
     | '/api/auth/$'
@@ -97,6 +107,7 @@ export interface FileRouteTypes {
     | '/basket'
     | '/login'
     | '/signup'
+    | '/items/$menuItemId'
     | '/orders/$orderId'
     | '/orders'
     | '/api/auth/$'
@@ -106,6 +117,7 @@ export interface FileRouteTypes {
     | '/basket'
     | '/login'
     | '/signup'
+    | '/items/$menuItemId'
     | '/orders/$orderId'
     | '/orders/'
     | '/api/auth/$'
@@ -116,6 +128,7 @@ export interface RootRouteChildren {
   BasketRoute: typeof BasketRoute
   LoginRoute: typeof LoginRoute
   SignupRoute: typeof SignupRoute
+  ItemsMenuItemIdRoute: typeof ItemsMenuItemIdRoute
   OrdersOrderIdRoute: typeof OrdersOrderIdRoute
   OrdersIndexRoute: typeof OrdersIndexRoute
   ApiAuthSplatRoute: typeof ApiAuthSplatRoute
@@ -151,6 +164,13 @@ declare module '@tanstack/react-router' {
       preLoaderRoute: typeof SignupRouteImport
       parentRoute: typeof rootRouteImport
     }
+    '/items/$menuItemId': {
+      id: '/items/$menuItemId'
+      path: '/items/$menuItemId'
+      fullPath: '/items/$menuItemId'
+      preLoaderRoute: typeof ItemsMenuItemIdRouteImport
+      parentRoute: typeof rootRouteImport
+    }
     '/orders/': {
       id: '/orders/'
       path: '/orders'
@@ -180,6 +200,7 @@ const rootRouteChildren: RootRouteChildren = {
   BasketRoute: BasketRoute,
   LoginRoute: LoginRoute,
   SignupRoute: SignupRoute,
+  ItemsMenuItemIdRoute: ItemsMenuItemIdRoute,
   OrdersOrderIdRoute: OrdersOrderIdRoute,
   OrdersIndexRoute: OrdersIndexRoute,
   ApiAuthSplatRoute: ApiAuthSplatRoute,