Use this skill any time a spreadsheet file is the primary input or output. This means any task where the user wants to: open, read, edit, or fix an existing .xlsx, .xlsm, .csv, or .tsv file (e.g., adding columns, computing formulas, formatting, charting, cleaning messy data); create a new spreadsheet from scratch or from other data sources; or convert between tabular file formats. Trigger especially when the user references a spreadsheet file by name or path — even casually (like "the xlsx in my downloads") — and wants something done to it or produced from it. Also trigger for cleaning or restructuring messy tabular data files (malformed rows, misplaced headers, junk data) into proper spreadsheets. The deliverable must be a spreadsheet file. Do NOT trigger when the primary deliverable is a Word document, HTML report, standalone Python script, database pipeline, or Google Sheets API integration, even if tabular data is involved.

当电子表格文件是主要输入或输出时，使用此技能。这意味着用户需要执行以下任何任务：打开、读取、编辑或修复现有的 .xlsx、.xlsm、.csv 或 .tsv 文件（例如，添加列、计算公式、格式化、制图、清理杂乱数据）；从零开始或从其他数据源创建新的电子表格；或在表格文件格式之间进行转换。当用户提及电子表格文件的名称或路径时（即使只是随意提及，如“我下载文件夹里的那个 xlsx”），并希望对其执行操作或基于它生成内容时，应触发此技能。此外，当需将杂乱的表格文件（如格式错误的行、错位的表头、垃圾数据）清理并重构为规范的电子表格时，也应触发此技能。交付物必须是电子表格文件。若主要交付物是 Word 文档、HTML 报告、独立的 Python 脚本、数据库流水线或 Google Sheets API 集成，即便涉及表格数据，也请勿触发此技能。