- Add CLI commands for user management (add-user, delete-user, list-users)
- Implement admin authentication for all user management commands
- Add password confirmation and deletion safety checks
- Prevent admins from deleting their own accounts
- Create 17 unit tests with mocked dependencies
- Create 18 integration tests with real database
- Add shared db_session fixture in conftest.py
- Update CLI commands to use db_manager for session handling
- Complete story documentation with usage examples
All 35 tests passing. Story 1.5 complete.