test(user) : couvre le soft-delete + désarchivage admin et corrige les retours de review

- ajoute des tests fonctionnels (archive au DELETE, exclusion de la
  collection, listing/désarchivage admin, anti-auto-archivage) et un test
  unitaire du ArchivedUserChecker
- expose un filtre BooleanFilter `archived` + bypass admin dans
  ExcludeArchivedUserExtension pour lister les archivés (?archived=true)
- rend `archived` modifiable par un admin (groupe user:write + ApiProperty
  ROLE_ADMIN) → désarchivage possible via PATCH /api/users/{id}
- RestoreMissingUsersCommand : ne compte que les insertions réelles
  (ON CONFLICT DO NOTHING n'est plus comptabilisé à tort)
- relève memory_limit des tests à 512M (boot sérialiseur API Platform)

tests/Unit/Module/Core/Infrastructure/Security/ArchivedUserCheckerTest.php

@@ -0,0 +1,43 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Tests\Unit\Module\Core\Infrastructure\Security;
+
+use App\Module\Core\Domain\Entity\User;
+use App\Module\Core\Infrastructure\Security\ArchivedUserChecker;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Security\Core\Exception\CustomUserMessageAccountStatusException;
+use Symfony\Component\Security\Core\User\InMemoryUser;
+
+/**
+ * @internal
+ */
+final class ArchivedUserCheckerTest extends TestCase
+{
+    public function testArchivedUserIsRejectedPreAuth(): void
+    {
+        $user = new User()->setArchived(true);
+
+        $this->expectException(CustomUserMessageAccountStatusException::class);
+
+        new ArchivedUserChecker()->checkPreAuth($user);
+    }
+
+    public function testActiveUserPassesPreAuth(): void
+    {
+        $user = new User()->setArchived(false);
+
+        new ArchivedUserChecker()->checkPreAuth($user);
+
+        $this->addToAssertionCount(1);
+    }
+
+    public function testNonAppUserIsIgnored(): void
+    {
+        // A user that is not our entity must not be rejected by this checker.
+        new ArchivedUserChecker()->checkPreAuth(new InMemoryUser('someone', null));
+
+        $this->addToAssertionCount(1);
+    }
+}