Can I vibe code Sovos?

1. OVERVIEW AND DATA MODEL
Build a lightweight sales tax calculation microservice using Node.js and PostgreSQL. Define schemas for:
- `tax_jurisdictions` (id, state, county, city, zip_code, combined_rate)
- `product_tax_categories` (id, name, code, description)
- `tax_rules` (id, jurisdiction_id, product_category_id, rule_type, exempt_threshold, tax_rate_override)
- `tax_exemptions` (id, customer_id, state, certificate_number, valid_until, status)
- `tax_transaction_logs` (id, order_id, subtotal, tax_collected, jurisdiction_breakdown_json, calculated_at)

2. CORE DETERMINATION ENGINE
Create an API endpoint `POST /v1/tax/calculate` accepting line items, shipping address, customer ID, and order subtotal.
- Match shipping address against `tax_jurisdictions` by ZIP code and state.
- Check if the customer has an active record in `tax_exemptions`. If valid, return 0 tax with exemption reason code.
- Evaluate line items against `tax_rules`. If a product category is exempt or subject to a partial rate (e.g., clothing under $110 in NY), apply the rule to that line item.
- Sum up state, county, and municipal tax calculations. Return itemized tax breakdown and store immutable log in `tax_transaction_logs`.

3. REPORTING AND EXPORT
Build an administrative dashboard displaying cumulative tax collected per state and county over specified date ranges. Provide CSV/JSON export functionality formatted for manual CPA filing.

4. FAILURE MODES AND EDGE CASES
- Address mismatch: If ZIP code lookup fails, fallback to state baseline tax rate and flag transaction for manual audit.
- Rounding rules: Calculate tax per line item and apply half-up rounding at 2 decimal places to avoid cent-mismatch discrepancies.
- Tax law changes: Allow manual CSV imports of updated rate tables.

OUT OF SCOPE: Automated tax return filing with government portals, real-time GIS spatial geocoding, global VAT e-invoicing CTC integrations, and legal audit indemnification.

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