Revert "Make MarkBookingRefunded synchronous so refunds cancel instantly"

This reverts commit 825320a117.

app-modules/payment/src/Listeners/MarkBookingRefunded.php

@@ -2,6 +2,7 @@
 
 namespace Modules\Payment\Listeners;
 
+use Illuminate\Contracts\Queue\ShouldQueue;
 use Modules\Booking\Enums\BookingStatus;
 use Modules\Payment\Events\RefundProcessed;
 
@@ -10,14 +11,8 @@ use Modules\Payment\Events\RefundProcessed;
  * completes (domain.md §5). Guarded the same way as MarkBookingPaid — only
  * ever moves a still-confirmed booking, never clobbers one that moved on
  * for another reason.
- *
- * Deliberately synchronous, unlike MarkBookingPaid — a refund is always
- * initiated from a request that's already waiting on it (the Filament
- * action or the API endpoint), and staff expect the booking's status to
- * read Cancelled the instant that request completes, not once a queue
- * worker gets to it.
  */
-class MarkBookingRefunded
+class MarkBookingRefunded implements ShouldQueue
 {
     public function handle(RefundProcessed $event): void
     {
@@ -27,6 +22,10 @@ class MarkBookingRefunded
         // pre-redesign rows where booking_id wasn't yet recorded.
         $booking = $event->refund->booking ?? $event->refund->payment->booking;
 
+        // Booking uses SoftDeletes — normally unreachable here (a confirmed
+        // booking is never deletable, BookingPolicy::delete), but this
+        // listener is queued, so it's worth guarding against a booking that
+        // vanished between dispatch and execution regardless.
         if ($booking === null) {
             return;
         }

app-modules/payment/tests/Feature/MarkBookingRefundedTest.php

@@ -29,7 +29,7 @@ test('does not touch a booking that already moved on for another reason', functi
     expect($booking->refresh()->status)->toBe(BookingStatus::Cancelled);
 });
 
-test('does not crash if the booking was soft-deleted before this listener ran', function () {
+test('does not crash if the booking was soft-deleted before this queued listener ran', function () {
     $booking = Booking::factory()->create(['status' => BookingStatus::Confirmed]);
     $payment = Payment::factory()->completed()->create(['booking_id' => $booking->id, 'gateway' => PaymentMethod::KbzMiniApp]);
     $refund = Refund::factory()->create(['payment_id' => $payment->id, 'status' => RefundStatus::Completed]);