mui/toolpad ? reverse-engineered prompt

Build me a Toolpad style app for internal dashboards and admin work, using the Material UI look and feel.

I want a clean starter that lets me create a dashboard with a sidebar, top navigation, and simple routing between pages like overview, users, orders, and settings. Include a few reusable components for showing cards, tables, forms, and basic CRUD flows so I can manage records without starting from scratch. Make it feel like something I could use for a real internal tool, with a polished layout, responsive behavior, and easy placeholders for connecting to my own data.

If it helps, check the current docs online and use the recommended setup for the latest Toolpad approach. I’d also like a sample app that shows how the pieces fit together so I can copy it and customize it quickly.