Can I vibe code FlavorCloud?

Build a Node.js/Express service that calculates estimated international landed costs (duties, taxes, fees) for ecommerce cart items at checkout.

1. DATA MODEL:
- Store Product Catalog (ID, title, description, price, origin_country, weight, material_composition).
- Tariff Rate Table (destination_country, hs_code, duty_rate, vat_rate, de_minimis_threshold_currency, de_minimis_value).
- HS Code Mappings (product_id, assigned_hs_code, confidence_score).

2. CORE FUNCTIONALITY:
- Endpoint POST /api/classify-sku: Accepts product title and description, calls OpenAI API with structured outputs to classify product into a standard 6-digit HS Code.
- Endpoint POST /api/calculate-landed-cost: Accepts cart items, origin country, destination country, and base shipping cost.
- Check item value against target country's de minimis thresholds (duty de minimis and tax de minimis).
- If order total value exceeds de minimis, calculate duty_amount = item_value * duty_rate.
- Calculate tax_amount = (item_value + duty_amount + shipping_cost) * vat_rate.
- Return breakdown: total_landed_cost, duty_total, tax_total, breakdown_per_item.

3. CHECKOUT WIDGET INTEGRATION:
- Provide a lightweight vanilla JS script that attaches to a cart web component, listens for country selection changes, fetches /api/calculate-landed-cost, and inserts 'Estimated Customs & Taxes' as a line item before checkout submission.

4. FAILURE MODES & HANDLERS:
- Missing HS Code: Fallback to a general category HS code (e.g., 9900.00) with a safe average duty rate of 10%.
- Tariff Rate Unavailability: Default to destination country's baseline VAT rate and log a warning.
- Invalid address/country code: Reject calculation gracefully and prompt user to verify location.

OUT OF SCOPE: Physical shipping label generation, live carrier API rate shopping, and international tax filing.

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