feat(composant) : add ComposantPieceSlotController for slot quantity PATCH

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/Controller/ComposantPieceSlotController.php

@@ -0,0 +1,48 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Controller;
+
+use App\Entity\ComposantPieceSlot;
+use Doctrine\ORM\EntityManagerInterface;
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\JsonResponse;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\Routing\Attribute\Route;
+
+#[Route('/api/composant-piece-slots')]
+class ComposantPieceSlotController extends AbstractController
+{
+    public function __construct(
+        private readonly EntityManagerInterface $entityManager,
+    ) {}
+
+    #[Route('/{id}', name: 'composant_piece_slot_patch', methods: ['PATCH'])]
+    public function patch(string $id, Request $request): JsonResponse
+    {
+        $this->denyAccessUnlessGranted('ROLE_GESTIONNAIRE');
+
+        $slot = $this->entityManager->find(ComposantPieceSlot::class, $id);
+        if (!$slot) {
+            return $this->json(['success' => false, 'error' => 'Slot not found.'], 404);
+        }
+
+        $payload = json_decode($request->getContent(), true);
+        if (!is_array($payload)) {
+            return $this->json(['success' => false, 'error' => 'Invalid JSON payload.'], 400);
+        }
+
+        if (array_key_exists('quantity', $payload)) {
+            $slot->setQuantity(max(1, (int) $payload['quantity']));
+        }
+
+        $this->entityManager->flush();
+
+        return $this->json([
+            'success'  => true,
+            'id'       => $slot->getId(),
+            'quantity' => $slot->getQuantity(),
+        ]);
+    }
+}