feat(auth): expose user role in auth/me endpoint

🚀 Feature Request

Currently, the GET /api/v1/auth/me endpoint does not expose the authenticated user’s role information. This makes it difficult for frontend applications and client CLI to reliably identify authorization levels and implement role-based UI or access control without making additional requests.

Solution

Include a role field in the response payload of the GET /api/v1/auth/me endpoint.