Can I vibe code Retention Science?

1. System Architecture & Data Model
Build a lightweight lifecycle email automation engine using Node.js, PostgreSQL, and Redis with BullMQ. Create tables for customers (id, email, shopify_id, created_at, total_spent, orders_count), events (id, customer_id, event_name, payload, timestamp), campaigns (id, name, subject, body_html, trigger_event), and email_logs (id, customer_id, campaign_id, status, sent_at).

2. Core Automated Workflows
Implement webhook endpoints for Shopify store events: orders/create, carts/update, and checkouts/create. Process incoming webhooks asynchronously using BullMQ queues. Trigger automated email flows based on explicit deterministic rules: Abandoned Cart (cart update event with no order within 2 hours), Welcome Sequence (new customer creation), and Winback (no order placed within 60 days). Compute basic RFM scores (Recency, Frequency, Monetary) on a nightly cron schedule to dynamically assign tag segments.

3. Email Integration & Delivery Infrastructure
Integrate the Resend or AWS SES API via their official SDKs for sending emails. Implement incoming webhooks to process bounce, complaint, and delivery tracking events. Automatically append hard bounces and spam complaints to a local suppression list table in PostgreSQL to prevent re-sending.

4. Failure Modes & Edge Cases
Handle webhook retries safely using idempotency keys derived from Shopify event IDs. Implement rate limiting on outgoing API sends to adhere to email provider thresholds. Include RFC 8058 compliant one-click unsubscribe links in all email headers and handle unsubscription HTTP GET/POST callbacks.

5. Out of Scope
Do not build a visual drag-and-drop template editor; use raw HTML or React Email components. Exclude machine learning models, predictive send-time engines, and cross-store data aggregation.

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