feat : add User CRUD with admin management

Add User API operations (GET, POST, PATCH, DELETE) with password
hashing processor, frontend service, drawer and admin tab.

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

src/State/UserPasswordHasherProcessor.php

@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\State;
+
+use ApiPlatform\Metadata\Operation;
+use ApiPlatform\State\ProcessorInterface;
+use App\Entity\User;
+use Symfony\Component\DependencyInjection\Attribute\Autowire;
+use Symfony\Component\PasswordHasher\Hasher\UserPasswordHasherInterface;
+
+/**
+ * @implements ProcessorInterface<User, User>
+ */
+final readonly class UserPasswordHasherProcessor implements ProcessorInterface
+{
+    /**
+     * @param ProcessorInterface<User, User> $persistProcessor
+     */
+    public function __construct(
+        #[Autowire(service: 'api_platform.doctrine.orm.state.persist_processor')]
+        private ProcessorInterface $persistProcessor,
+        private UserPasswordHasherInterface $passwordHasher,
+    ) {}
+
+    /**
+     * @param User $data
+     */
+    public function process(mixed $data, Operation $operation, array $uriVariables = [], array $context = []): mixed
+    {
+        if (null !== $data->getPassword() && !str_starts_with($data->getPassword(), '$')) {
+            $data->setPassword(
+                $this->passwordHasher->hashPassword($data, $data->getPassword())
+            );
+        }
+
+        return $this->persistProcessor->process($data, $operation, $uriVariables, $context);
+    }
+}