- Add generate_secure_password() for OTP generation during admin bootstrap
- Display admin credentials (username/password) in console on first run
- Save credentials to ~/.gb-setup-credentials file
- Fix Zitadel client to support PAT token authentication
- Replace OAuth2 password grant with Zitadel Session API for login
- Fix get_current_user to fetch user data from Zitadel session
- Return session_id as access_token for proper authentication
- Set email as verified on user creation to skip verification
- Add password grant type to OAuth application config
- Update directory_setup to include proper redirect URIs
