This is a submission for the GitHub Finish-Up-A-Thon Challenge
What I Built
I rebuilt ExcelPy from an unfinished desktop stock-comparison prototype into a working spreadsheet QA workspace for teams that need to compare an older, trusted workbook against a newer one before publishing pricing, catalog, or inventory changes.
The original was a Tkinter script with file pickers. It could select two .xlsx files, but the actual comparison logic, validation, mismatch handling, and reporting layer were all still placeholders.
The current app is a Next.js 16 + TypeScript workflow built around a clear path: upload → map → review → report.
