Refactor completeBooking method call and add method skeleton in order_bookings_o

- Updated `completeBooking` method call to directly use `$user->id` without `value()` extraction.
- Added `completeBooking` method skeleton in `order_bookings_o` with placeholders for future implementation.

services/nginx/app/objects/order_bookings_o.php

@@ -166,4 +166,13 @@ class order_bookings_o extends db
         ];
     }
 
+    public function completeBooking(int $user_id): void
+    {
+        // TODO: Create order
+        // TODO: Add order items
+        // TODO: Create wash certificate
+        // TODO: Send wash certificate
+        // TODO: Update booking with order ID
+    }
+
 }

services/nginx/app/routes/orderBookingRoute.php

@@ -270,7 +270,7 @@ class orderBookingRoute
             /**
              * Complete the booking
              */
-            $object->completeBooking((int)$user->id->value());
+            $object->completeBooking((int)$user->id);
             /**
              * Return the object
              */