2026-07_sales.csv: 117 rows kept, 0 blank/total rows skipped, columns mapped {'date': 0, 'store': 1, 'product': 2, 'qty': 3, 'amount': 4}
Aug 2026 export.csv: 118 rows kept, 2 blank/total rows skipped, columns mapped {'date': 0, 'store': 1, 'product': 2, 'qty': 3, 'amount': 4}
october.csv: 121 rows kept, 0 blank/total rows skipped, columns mapped {'date': 0, 'store': 1, 'product': 2, 'qty': 3, 'amount': 4}
sales_sep.csv: 134 rows kept, 0 blank/total rows skipped, columns mapped {'date': 0, 'store': 1, 'product': 2, 'qty': 3, 'amount': 4}
Total rows merged: 490
Stores after cleanup: East, North, South, West
