chore: align device terminology to cash register across wizard and success pages

shop/app/order/success/page.tsx

@@ -113,12 +113,12 @@ export default async function OrderSuccessPage({
             </Badge>
           </CardHeader>
           <CardContent className="space-y-4">
-            {/* Produkte gruppiert nach Gerät */}
+            {/* Produkte gruppiert nach Kasse */}
             <div className="space-y-4">
               {Object.entries(groupedItems).map(([deviceName, devItems]) => (
                 <div key={deviceName} className="space-y-2 border-b border-white/5 pb-3 last:border-0 last:pb-0">
                   <div className="bg-white/5 px-2 py-1 rounded text-xs text-primary font-bold">
-                    Gerät: {deviceName}
+                    Kasse: {deviceName}
                   </div>
                   {devItems.map((item) => (
                     <div key={item.product_id} className="space-y-1 pl-2">