Functional cart and balance display

src/app/api/items/route.ts

@@ -16,6 +16,9 @@ export async function GET() {
       item: { select: { stock: true } },
     },
   });
+  // and cache no store header
 
-  return NextResponse.json(sellables);
+  return NextResponse.json(sellables, {
+    headers: { "Cache-Control": "no-store" },
+  });
 }