- Added /users/auth-mode public endpoint to detect LDAP status
- Updated frontend to call getAuthMode() instead of hardcoded false
- Login page now automatically switches to enterprise mode when LDAP is enabled
- Fixes missing LDAP user login UI that was previously disabled with TODO comment
This restores the functionality that was commented out earlier where the login
page would auto-detect whether to show local user list or enterprise username input.
- Fix password encoding: Convert password to UTF-8 bytes for LDAP protocol compatibility
- Add 'user' field to TokenResponse schema for frontend compatibility
- Update login endpoint to populate user object in response
- Resolves 'Invalid Protocol Password' error on LDAP login attempts
The issue was that frontend expected response.user but backend only returned
individual fields (user_id, username, role), causing localStorage assignment to fail.
