What problem does it solve? Manually keeping a Word report, an Excel workbook, and a PDF preview in sync is error-prone: totals get typed twice, formulas drift from prose, and stale PDFs get shared. This Skill builds all three deliverables from a single structured doc.json source so numbers, narrative, and previews always reconcile. ## Core Features & Use Cases - Shared-source document generation: One doc.json drives an editable DOCX report, a formula-driven XLSX workbook (SUM, subtraction, guarded growth formulas), and a fresh LibreOffice-rendered PDF preview. - Comparison and generic modes: Build a two-period regional revenue comparison with derived totals, growth, and narrative prose, or a generic literal-data report from rectangular sheet rows (1-10 columns, up to 1,000 rows). - Verified export pipeline: The build re-saves the workbook through LibreOffice to recalculate formulas, validates the fresh PDF, and writes verdict and export receipts to .harness. - Use Case: A finance analyst edits doc.json with quarterly regional revenue in USD, runs the export script, and hands off a coordinated Word report, recalculated spreadsheet, and PDF preview for review. ## Quick Start Edit doc.json with your comparison periods, currency, and regional revenue rows, then ask the agent to run the sheetsdoc export script and inspect the generated DOCX, XLSX, and PDF.