Push paid menu orders to the Ladill POS kitchen

When a menu (food) storefront order is paid, best-effort POST it to the
merchant's Ladill POS kitchen ingest (config/kitchen.php → KITCHEN_API_URL/KEY)
so it lands on their Kitchen Display alongside dine-in tabs. Failures are logged,
never surfaced — order completion is unaffected; POS ignores orders for accounts
that don't run a POS kitchen.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/Services/Merchant/MerchantSaleService.php

@@ -20,6 +20,7 @@ class MerchantSaleService
         private PaystackService $paystack,
         private BillingClient $billing,
         private SmsService $sms,
+        private KitchenPusher $kitchen,
     ) {}
 
     /**
@@ -217,6 +218,7 @@ class MerchantSaleService
         ]);
 
         $this->notifyOrderPlaced($order->fresh(['qrCode', 'merchant']));
+        $this->kitchen->push($order->fresh(['qrCode', 'merchant']));
 
         return $order;
     }
@@ -257,6 +259,7 @@ class MerchantSaleService
         );
 
         $this->notifyOrderPlaced($order->fresh(['qrCode', 'merchant']));
+        $this->kitchen->push($order->fresh(['qrCode', 'merchant']));
 
         return $order;
     }