ayush27-03/xl ? reverse-engineered prompt

Build me a simple app that helps me analyze a payroll Excel file.

I want to be able to upload the spreadsheet, see the data cleaned up, and get useful summaries like total payroll, employee counts, department wise breakdowns, missing or strange entries, and any other quick insights that make the file easier to understand. It should also show the results in a clean dashboard so I can browse the numbers without opening the spreadsheet myself.

Please make it feel polished and easy to use, with a straightforward upload flow and readable tables or charts. If you need to check current docs or best practices for anything, go look them up online and then keep going. Add a few basic tests too, so the main analysis works reliably.