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artifact_spreadsheet

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Create, read, edit, fix, or clean spreadsheet files (.xlsx, .xlsm, .csv, .tsv). Use whenever a build task's artifact kind is spreadsheet, or the task names a spreadsheet file and wants something done to it or produced from it, including restructuring messy tabular data into a proper workbook. Covers openpyxl generation, formulas and recalculation, editing existing workbooks, and the validation gates. Not for tasks whose deliverable is a document, report, or web page that merely contains a table.

Meta/muse-agent/skills/artifacts/spreadsheet/SKILL.md

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# Spreadsheet artifacts

An xlsx is generated with the preinstalled `openpyxl` library from a
generator script. Keep the generator under `.src/`: it is the editable
source for future revisions, and the binary is always regenerated from it.

| Task | Path |
|---|---|
| Create, or edit with formulas and formatting | `openpyxl` |
| Quick look at an existing sheet | `muse.read` (converted to markdown, paged); it carries no cell coordinates, so never plan edits from it |
| Read a workbook's model (formulas AND their values) | two `load_workbook` passes; see `/opt/hatch/skills/artifacts/spreadsheet/references/formulas.md` |
| Bulk or messy tabular data in or out | Python `csv` from the standard library; `pip install --break-system-packages pandas` when a task genuinely needs it |
| Design, structure, number formats, model conventions | `/opt/hatch/skills/artifacts/spreadsheet/references/visual.md` |
| Formulas, recalculation, editing existing workbooks | `/opt/hatch/skills/artifacts/spreadsheet/references/formulas.md` |
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