dont cast email to string, use new value method

app/Auth/AuthController.php

@@ -126,7 +126,7 @@ class AuthController
         $response->getBody()->write(json_encode([
             'user' => [
                 'id' => $user->getId(),
-                'email' => (string) $user->getEmail(),
+                'email' => $user->getEmail()->value(),
                 'isAdmin' => $user->isAdmin(),
             ],
         ]));

app/User/JsonUserRepository.php

@@ -21,7 +21,7 @@ class JsonUserRepository implements UserRepository
 
         $users[] = [
             'id' => $id,
-            'email' => (string) $dto->email,
+            'email' => $dto->email->value(),
             'passwordHash' => $dto->passwordHash,
             'isAdmin' => $dto->isAdmin,
         ];
@@ -53,7 +53,7 @@ class JsonUserRepository implements UserRepository
         $users = $this->readUsers();
 
         foreach ($users as $data) {
-            if ($data['email'] === (string) $email) {
+            if ($data['email'] === $email->value()) {
                 return $this->hydrate($data);
             }
         }

app/ValueObjects/EmailAddress.php

@@ -11,6 +11,11 @@ class EmailAddress
         $this->normalized = $email;
     }
 
+    public function value(): string
+    {
+        return $this->normalized;
+    }
+
     public function __toString(): string
     {
         return $this->normalized;