Can I vibe code SoStocked?

Build a full-stack Amazon inventory forecasting and purchase order management web application using Next.js, Tailwind CSS, Python (FastAPI), and PostgreSQL.

1. DATA MODEL
Create tables for:
- `skus`: id, asin, fnsku, sku_name, supplier_id, cost_price, selling_price, lead_time_days, buffer_days.
- `inventory_levels`: id, sku_id, fba_quantity, warehouse_3pl_quantity, reserved_quantity, updated_at.
- `daily_sales`: id, sku_id, date, units_sold, out_of_stock_flag.
- `purchase_orders`: id, po_number, supplier_id, status (draft, ordered, in_transit, received), total_cost, created_at.
- `po_items`: id, po_id, sku_id, quantity_ordered, unit_cost.

2. FORECAST ENGINE (Python/FastAPI)
- Implement a forecasting worker that computes daily sales velocity over 7, 30, and 90-day rolling windows.
- Filter out days where `out_of_stock_flag` is true so zero-sales days do not artificially deflate velocity.
- Calculate `days_of_stock_remaining` = (fba_quantity + warehouse_3pl_quantity) / blended_velocity.
- Calculate `reorder_point` = (blended_velocity * lead_time_days) + (blended_velocity * buffer_days).
- Trigger a 'Reorder Needed' alert when total inventory drops below `reorder_point`.

3. FRONTEND DASHBOARD (Next.js & Tailwind)
- Interactive inventory table showing SKU details, current FBA/3PL stock, computed velocity, days of stock remaining, and status indicators (Red: Critical, Yellow: Warning, Green: OK).
- Allow manual override controls: a slider to add percentage bumps for upcoming sales events (e.g., +20% spike for Prime Day) which recalculates reorder dates dynamically.
- PO Generator UI: Select low-stock SKUs, auto-fill recommended order quantities based on economic order quantity (EOQ) or target days of inventory, and generate a downloadable PDF purchase order.

4. FAILURE MODES & OUT OF SCOPE
- Handle missing API data by falling back to historical average velocity.
- Out of scope for MVP: direct Amazon SP-API OAuth connector (mock with CSV upload for sales and inventory reports), multi-currency conversion, and automated freight tracking integration.

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