feat: implement mutability cutoff for rentals

addresses #869cca42x

src/Form/Service/CreateFieldStateProvider.php

@@ -23,6 +23,7 @@ use App\Form\Service\Condition\RoomSelectionCondition;
 use App\Form\Service\Condition\ServiceSubTypeCondition;
 use App\Form\Service\Condition\SingleRoomTypeCondition;
 use App\Form\Service\Condition\SkiPassSelectionCondition;
+use App\Form\Service\Condition\TravelStartCutoffReachedCondition;
 use App\Service\ParticipantEligibilityService;
 
 /**
@@ -79,6 +80,10 @@ class CreateFieldStateProvider extends AbstractFieldStateProvider
 
         $rentalCondition = new RentalSelectionCondition();
         $skiPassCondition = new SkiPassSelectionCondition();
+        // Booking-level D-4 cutoff used to lock mutable service selections close to departure.
+        $serviceCutoffReachedCondition = new TravelStartCutoffReachedCondition(
+            TravelStartCutoffReachedCondition::DEFAULT_DAYS_BEFORE_START
+        );
 
         // First participant read-only condition
         // Render personal data fields as static text for first participant in non-internal agency bookings
@@ -177,13 +182,15 @@ class CreateFieldStateProvider extends AbstractFieldStateProvider
             ),
         ];
 
-        // Show rentals only when both date of birth is provided AND skipass is selected AND participant is eligible
+        // Show rentals only when both date of birth is provided AND skipass is selected AND participant is eligible.
+        // From D-4 onward, keep rentals visible but make them read-only.
         $this->fieldStateConditions['rentals'] = [
             'hidden' => CompositeCondition::or(
                 CompositeCondition::not($dateOfBirthProvidedCondition),
                 CompositeCondition::not($skiPassCondition),
                 $bookingEligibilityCondition
             ),
+            'readonly' => $serviceCutoffReachedCondition,
         ];
 
         $this->fieldStateConditions['board'] = [