## Multi-user

Authentication is optional. When enabled:

Login/Register

  - Local accounts with username/password
  - First registered user becomes admin
  - Public registration can be disabled

SSO (optional)

  - Google and GitHub when configured

Roles

  - User: can search/download, manage their profile
  - Admin: access to all Configuration tabs and user management

Admin actions

  - Create/delete users, change roles
  - Reset user passwords

Where to find it in the UI:

- User menu (top-right) → Profile settings
- Configuration → User Management (admin)