Excel/CSV cleanup demo v1.1.0

Adds the MIT-licensed, zero-dependency csv-cleanroom Node.js CLI, five focused tests including a 50,000-row boundary case, deterministic cleaned/exception/summary outputs, and the fixed-scope CNY 399/700 service pages.\n\nThe ZIP contains the CLI, configuration example, sanitized inputs, deterministic outputs, workbook, validation report, README, and license. No customer data is included.

Excel automation demo v1.0.0

Fixed-scope Excel / CSV automation demo

Sanitized portfolio deliverable showing:

• consolidation of two order CSV files;
• duplicate detection and exception routing;
• customer master-data lookup;
• formula-driven net amounts and dashboard totals;
• full reconciliation: 10 input rows = 4 clean rows + 6 exception rows.

The workbook is a public demo, not a customer project. Fixed-price work is async text only, with no meetings or bargaining and one consolidated written revision.