spreadsheet

Handles spreadsheet creation, editing, and analysis for .xlsx, .csv, and .tsv files. Uses openpyxl for formatting-aware Excel work and pandas for data workflows. Recalculates formulas and renders sheets for visual review before delivery when tooling is available. Unlike pasting data into a script or using a generic code agent, this skill preserves existing formatting, uses proper cell references instead of hardcoded values, and renders sheets for visual inspection so layout issues are caught before the file is handed off.