Version 0.5.0

Added

• OIDC/OAuth authentication (Authorization Code + PKCE) via Keycloak and other
  OpenID Connect providers. (@youknowforsearch)
• Session-based login page at /auth/login and global auth guard protecting
  the UI, REST API, and MongoDB/shell websockets. (@youknowforsearch)

Changed

• Fixed GenAI UI not showing bug.
• When OIDC is enabled, trustProxy is turned on for correct redirect URIs
  behind a reverse proxy or ingress. (@youknowforsearch)