f0d0edf449
- Implement LoginUseCase with password verification and JWT token generation - Generate user_auth token (without workspace) for initial login - Create session with refresh_token in Redis - Track last_login_at and last_login_ip - Implement LogoutUseCase for single device or all devices - Add RefreshTokenUseCase placeholder (to be implemented) - Add 9 comprehensive unit tests (all passed) Phase 4 Task 7/68 completed