feat: replace *Service suffix with role-based class names

src/Form/Service/CreateFieldStateProvider.php

@@ -24,7 +24,7 @@ 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;
+use App\Service\ParticipantEligibilityChecker;
 
 /**
  * Field state provider for the booking create workflow.
@@ -44,7 +44,7 @@ use App\Service\ParticipantEligibilityService;
 class CreateFieldStateProvider extends AbstractFieldStateProvider
 {
     public function __construct(
-        private readonly ParticipantEligibilityService $participantEligibilityService,
+        private readonly ParticipantEligibilityChecker $participantEligibilityService,
     ) {
         parent::__construct();
     }
@@ -317,7 +317,7 @@ class CreateFieldStateProvider extends AbstractFieldStateProvider
 
         // Room assignment field:
         // - Hidden until date of birth is provided (age determines room eligibility, e.g., Baby rooms)
-        // - Rendered as static text when only one room type is selected (auto-assigned by RoomAssignmentService)
+        // - Rendered as static text when only one room type is selected (auto-assigned by RoomAssigner)
         $this->fieldStateConditions['assignedRoomId'] = [
             'hidden' => CompositeCondition::not($dateOfBirthProvidedCondition),
             'static_text' => new SingleRoomTypeCondition(),