Run the sales analysis and content brief. Pull what sold (and what didn't), explain why, and produce a ready-to-use content plan that acts on the data. Parse arguments: - (default: ) — , , or lookback window Step 1 — Sales breakdown Using the skill workflow for sales analysis: 1. Pull PayPal transactions for the lookback period grouped by item/service/SKU. 2. Pull QuickBooks revenue by product/service category. 3. Rank products by: total revenue, unit volume, and margin (if available in QB). 4. Calculate each product's share of total revenue vs. prior equivalent period. Top sellers: products…