feat(users) : ajout prénom et nom sur l'utilisateur

Deux colonnes nullable firstName/lastName sur User (groupes me:read,
user:list, user:write), éditables dans le drawer utilisateur (admin).
L'affichage reste basé sur le username pour l'instant. Migration +
valeurs de démo dans les fixtures.

src/DataFixtures/AppFixtures.php

@@ -43,6 +43,8 @@ class AppFixtures extends Fixture
         // Users
         $admin = new User();
         $admin->setUsername('admin');
+        $admin->setFirstName('Alex');
+        $admin->setLastName('Martin');
         $admin->setRoles(['ROLE_ADMIN']);
         $admin->setPassword($this->passwordHasher->hashPassword($admin, 'admin'));
         $admin->setApiToken('dev-mcp-token-for-testing-only-do-not-use-in-production');
@@ -50,18 +52,24 @@ class AppFixtures extends Fixture
 
         $userAlice = new User();
         $userAlice->setUsername('alice');
+        $userAlice->setFirstName('Alice');
+        $userAlice->setLastName('Dupont');
         $userAlice->setRoles(['ROLE_USER']);
         $userAlice->setPassword($this->passwordHasher->hashPassword($userAlice, 'alice'));
         $manager->persist($userAlice);
 
         $userBob = new User();
         $userBob->setUsername('bob');
+        $userBob->setFirstName('Bob');
+        $userBob->setLastName('Leroy');
         $userBob->setRoles(['ROLE_USER']);
         $userBob->setPassword($this->passwordHasher->hashPassword($userBob, 'bob'));
         $manager->persist($userBob);
 
         $userCharlie = new User();
         $userCharlie->setUsername('charlie');
+        $userCharlie->setFirstName('Charlie');
+        $userCharlie->setLastName('Moreau');
         $userCharlie->setRoles(['ROLE_USER']);
         $userCharlie->setPassword($this->passwordHasher->hashPassword($userCharlie, 'charlie'));
         $manager->persist($userCharlie);