Hide a round trip's return leg from the Bookings list

Showing both legs as separate rows read as two unrelated bookings rather
than one round trip. The list now only queries outbound/primary legs; the
return leg is still reachable via the outbound leg's existing "Linked Leg"
link on the detail page.

app-modules/booking/tests/Feature/BookingResourceTest.php

@@ -344,6 +344,22 @@ test('a soft-deleted booking is hidden from the default list but visible via the
         ->assertCanSeeTableRecords([$active, $deleted]);
 });
 
+test('a round trip\'s return leg has no row of its own in the list, only its outbound leg', function () {
+    $outbound = Booking::factory()->create(['is_return_leg' => false]);
+    $return = Booking::factory()->create([
+        'is_return_leg' => true,
+        'linked_booking_id' => $outbound->id,
+    ]);
+    $outbound->update(['linked_booking_id' => $return->id]);
+
+    // Showing both legs as separate rows read as two unrelated bookings
+    // rather than one round trip — the return leg is still reachable via
+    // the outbound leg's "Linked Leg" link on the detail page.
+    Livewire::test(ListBookings::class)
+        ->assertCanSeeTableRecords([$outbound])
+        ->assertCanNotSeeTableRecords([$return]);
+});
+
 test('the restore action is only visible for a trashed booking', function () {
     $active = Booking::factory()->create();
     $deleted = Booking::factory()->create();