refactor : simplification globale (vague 1 + 2)

- ActorProfileResolver : service unique partage par AbstractAuditSubscriber, EntityVersionService et ModelTypeCategoryConversionService (3 implementations dupliquees+divergentes)
- corrige un bug latent : EntityVersionService restoraitsans le fallback Security::getUser, loggant actor=null hors session
- machine-clone : clonage des contextFieldValues integre dans cloneComponentLinks/clonePieceLinks, supprime cloneContextFieldValues et son find() en boucle
- helpers extraits : serializeProductSlots (EntityVersionService), updateModelTypeCategory (ModelTypeCategoryConversionService)
- supprime collectCollectionUpdate() vide + ses appels (AbstractAuditSubscriber)
- useMachineDetailData : retire debug ref couplee a isEditMode, componentTypeLabelMap/pieceTypeLabelMap jamais consommes, double assignation machine.productLinks
- PieceItem : retire l'init pieceData dans onMounted (deja couvert par reactive() et le watcher)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/Service/ActorProfileResolver.php

@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Service;
+
+use App\Entity\Profile;
+use Symfony\Bundle\SecurityBundle\Security;
+use Symfony\Component\HttpFoundation\RequestStack;
+use Symfony\Component\HttpFoundation\Session\SessionInterface;
+use Throwable;
+
+final class ActorProfileResolver
+{
+    public function __construct(
+        private readonly RequestStack $requestStack,
+        private readonly Security $security,
+    ) {}
+
+    public function resolve(): ?string
+    {
+        try {
+            $session = $this->requestStack->getSession();
+            if ($session instanceof SessionInterface) {
+                $profileId = $session->get('profileId');
+                if ($profileId) {
+                    return (string) $profileId;
+                }
+            }
+        } catch (Throwable) {
+            // No session available (CLI context, etc.)
+        }
+
+        $user = $this->security->getUser();
+        if ($user instanceof Profile) {
+            return $user->getId();
+        }
+
+        return null;
+    }
+}