AUTH - update return for /register and /login

[codastream]

Description

user story : AS A Developer, I WANT the Authentication service to return structured user data objects upon registration and login SO THAT the frontend can immediately synchronize the application state and user interface without making an additional API call.

Details

It will be used by frontend.

Alongside #49 , it would help if auth service could return the same detailed object (without password) :

for instance for /register

return reply.code(201).send({
  data: {
    authId: id,
    username: username,
    email: email,
    role: 'USER' // default
  },
  message: 'User registered successfully'
});

and login

reply
  .setCookie('token', token, getCookieOptions(AUTH_CONFIG.COOKIE_MAX_AGE_SECONDS))
  .code(200)
  .send({
    data: {
      authId: user.id,
      username: user.username,
      email: user.email,
      role: user.role,
    },
    message: `Welcome ${user.username} !`
  });

---

Priority

high

Definition of done

• Zod validation : use or update the auth.schema in core package ?

Out of scope

Subtasks

• Tests
• Implementation
• Doc in wiki + Swagger ?