Can I vibe code Seguno?

1. System Architecture & Data Model: Build a Next.js (App Router) application acting as a custom email automation system for a single Shopify store. Model tables using Prisma PostgreSQL: `customers` (shopify_id, email, first_name, accepts_marketing, unsubscribed_at), `automations` (id, trigger_type, delay_minutes, active), and `logs` (id, recipient, status, external_id, opened_at, clicked_at).

2. Core Functionality & Webhooks: Implement endpoint `/api/webhooks/shopify` with Shopify HMAC validation. Listen to webhooks: `customers/create`, `checkouts/update`, and `orders/create`. Sync customer records and marketing preferences. Set up an asynchronous queue using Upstash QStash to process delayed automations: Welcome Email (15 min after customer creation), Abandoned Checkout (2 hours after checkout update if order not completed), and Post-Purchase Thank You (1 hour after order creation). Render responsive email bodies using React Email and dispatch via Resend API SDK.

3. Compliance & Tracking: Append a `List-Unsubscribe` header to outgoing messages containing an HMAC-signed token. Create a public route `/api/unsubscribe?token=...` that sets `unsubscribed_at` in the database and suppresses all future dispatches. Handle bounce and complaint webhooks from Resend to mark records as hard-bounced.

4. Edge Case Handling: Store idempotency keys to ignore duplicate webhooks. Cancel scheduled abandoned checkout emails immediately if an `orders/create` webhook is received for the matching customer/checkout token before the queue executes.

5. Out of Scope: Do not construct a WYSIWYG template designer or multi-merchant tenant system. Edit email content strictly in React Email template code.

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