Ahmedhassan1944/HR_Management_System ? reverse-engineered prompt

Build me a simple HR management web app for Google Sheets and Apps Script.

I want a clean interface where I can manage employees, see their details, edit records, and keep everything synced with a spreadsheet in the background. It should also have a separate insights view with charts and filters so I can quickly understand things like headcount and breakdowns by role or department, and reset filters easily when needed.

Please make the layout polished and easy to use, with a clear sidebar or top navigation, responsive pages, and working forms for adding and updating employee data. If it makes sense, include basic settings and document generation support too, since I want this to feel like a real HR tool and not just a spreadsheet wrapper.

Use the existing script structure if it helps, and look up current Google Apps Script docs online if you need to.