elunez/eladmin ? reverse-engineered prompt

Build me a full stack admin dashboard like ELADMIN, with a clean Vue based front end and a Spring Boot backend. I want a login system with JWT, role based permissions, dynamic menus, and data level access control so different users only see what they’re allowed to see. It should include user, role, department, position, and dictionary management, plus operation logs, exception logs, scheduled tasks, server monitoring, and a simple way to handle online users and single device login.

Please also add a code generator so I can create CRUD pages and backend modules quickly, and make the system feel polished with common table helpers, unified error handling, and file upload support. If it helps, look up current docs online for any setup details. Keep the project modular and easy to run, with sensible defaults and demo data so I can try it right away.