Stage M5 and Stage M6

apps/storefront/src/app/[locale]/layout.tsx

@@ -5,6 +5,7 @@ import { getTranslations, setRequestLocale } from 'next-intl/server';
 
 import { LOCALE_TAGS, type Locale } from '@sport/types';
 
+import { CartProvider } from '@/features/cart/cart-provider';
 import { routing } from '@/i18n/routing';
 
 import '@/styles/globals.css';
@@ -66,7 +67,11 @@ export default async function LocaleLayout({
   return (
     <html lang={LOCALE_TAGS[locale as Locale]} suppressHydrationWarning>
       <body className="min-h-screen antialiased">
-        <NextIntlClientProvider>{children}</NextIntlClientProvider>
+        <NextIntlClientProvider>
+          {/* Above both route groups: the bag survives moving from browsing
+              into checkout, which is the one transition it must not lose. */}
+          <CartProvider locale={locale as Locale}>{children}</CartProvider>
+        </NextIntlClientProvider>
       </body>
     </html>
   );