refactor : reorganize codebase to DDD architecture

Backend:
- src/Api/Auth/State/ — MeProvider, UserPasswordHasherProcessor
- src/Api/Shared/Resource/ — AppVersion
- src/Api/Shared/State/ — AppVersionProvider
- src/Domain/, src/Application/, src/Infrastructure/ — skeleton ready
- User entity stays in src/Entity/ (framework, outside DDD)

Frontend:
- frontend/domains/ — skeleton ready for bounded contexts

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/Api/Auth/State/MeProvider.php

@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace App\State;
+namespace App\Api\Auth\State;
 
 use ApiPlatform\Metadata\Operation;
 use ApiPlatform\State\ProviderInterface;

src/Api/Auth/State/UserPasswordHasherProcessor.php

@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace App\State;
+namespace App\Api\Auth\State;
 
 use ApiPlatform\Metadata\Operation;
 use ApiPlatform\State\ProcessorInterface;

src/Api/Shared/Resource/AppVersion.php

@@ -2,11 +2,11 @@
 
 declare(strict_types=1);
 
-namespace App\ApiResource;
+namespace App\Api\Shared\Resource;
 
 use ApiPlatform\Metadata\ApiResource;
 use ApiPlatform\Metadata\Get;
-use App\State\AppVersionProvider;
+use App\Api\Shared\State\AppVersionProvider;
 
 #[ApiResource(
     operations: [

src/Api/Shared/State/AppVersionProvider.php

@@ -2,10 +2,11 @@
 
 declare(strict_types=1);
 
-namespace App\State;
+namespace App\Api\Shared\State;
 
 use ApiPlatform\Metadata\Operation;
 use ApiPlatform\State\ProviderInterface;
+use App\Api\Shared\Resource\AppVersion;
 use Symfony\Component\DependencyInjection\Attribute\Autowire;
 
 /**
@@ -20,6 +21,6 @@ class AppVersionProvider implements ProviderInterface
 
     public function provide(Operation $operation, array $uriVariables = [], array $context = []): object
     {
-        return new \App\ApiResource\AppVersion($this->appVersion);
+        return new AppVersion($this->appVersion);
     }
 }

src/Entity/User.php

@@ -10,9 +10,9 @@ use ApiPlatform\Metadata\Get;
 use ApiPlatform\Metadata\GetCollection;
 use ApiPlatform\Metadata\Patch;
 use ApiPlatform\Metadata\Post;
+use App\Api\Auth\State\MeProvider;
+use App\Api\Auth\State\UserPasswordHasherProcessor;
 use App\Repository\UserRepository;
-use App\State\MeProvider;
-use App\State\UserPasswordHasherProcessor;
 use DateTimeImmutable;
 use Doctrine\ORM\Mapping as ORM;
 use Symfony\Component\Security\Core\User\PasswordAuthenticatedUserInterface;