Auditable CSV / XLSX Cleanup With Reconciliation QA

Auditable CSV / XLSX Cleanup With Reconciliation QA

Portfolio demonstration using synthetic data. I normalized dates, phone numbers, casing, and numeric values; removed two duplicate rows; excluded one invalid email; preserved source-row traceability; and flagged one missing country for review.

The final package includes a cleaned workbook, row-level QA flags, reconciliation totals, visual summaries, and a machine-readable verification receipt. Result: 12 rows received, 9 delivered, 2 duplicates removed, and an 88.9% QA pass rate—with every exclusion and warning traceable.