Can I vibe code ShipUp?

Build a post-purchase package tracking and notification system in Node.js (TypeScript) and Next.js.

1. DATA MODEL:
Create schemas for Order (id, shopify_order_id, email, line_items), Shipment (id, order_id, carrier_code, tracking_number, status, estimated_delivery, current_location), and TrackingEvent (id, shipment_id, status_code, raw_status, description, location, timestamp).

2. CORE FUNCTIONALITY:
- Webhook Endpoint: Ingest `orders/fulfilled` webhooks from Shopify. Extract tracking numbers and carrier names.
- Carrier Proxy Engine: Register tracking numbers with a multi-carrier aggregator (e.g. EasyPost API) or direct carrier APIs (FedEx, UPS, DHL). Save the tracker reference ID.
- Normalization Pipeline: Map carrier status updates into standard states: `in_transit`, `out_for_delivery`, `failed_attempt`, `delivered`, `exception`.
- Notification Processor: Listen to incoming tracking update webhooks. When status changes, dispatch transactional emails via SendGrid using custom HTML templates matching the order state.
- Branded Tracking Portal: Build a public Next.js page `/track/[tracking_number]` that renders a progress bar, status timeline, order item thumbnails, and a FAQ accordion.

3. FAILURE MODES:
- Missing Webhooks: Set up a Redis Cron job (BullMQ) to poll active shipments older than 24 hours that have not received an update.
- Carrier Rate Limits: Implement exponential backoff for carrier API requests.
- Unmapped Statuses: Store unknown status strings in a `raw_payload` JSON column and default state to `in_transit` while alerting Sentry.

4. OUT OF SCOPE:
Do not build multi-carrier shipping label generation, address validation, or return portal logistics.

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