Can I vibe code Omnisend?

Build a multi-channel lifecycle automation engine for Shopify using Next.js 14 (App Router), PostgreSQL (Prisma ORM), Tailwind CSS, and Resend for email delivery.

Core Architecture and Data Model:
1. Define Prisma schema with entities:
   - Contact: id, email, phone, shopifyCustomerId, attributes (JSONB), emailSubscribed (boolean), smsSubscribed (boolean), createdAt.
   - Event: id, contactId, name (e.g., 'checkout_started', 'order_fulfilled'), payload (JSONB), timestamp.
   - Workflow: id, name, triggerEvent, status (active/draft), nodes (JSONB tree containing delays, conditionals, actions).
   - WorkflowExecution: id, workflowId, contactId, currentNodeId, status (running, completed, failed), nextExecutionAt.
   - Campaign: id, name, subject, templateJson, scheduledAt, status.

Integrations and Webhooks:
1. Implement HMAC-verified Webhook Handlers for Shopify:
   - `/api/webhooks/shopify/checkouts-create`: Upsert Contact, log 'checkout_started' event, evaluate workflow triggers.
   - `/api/webhooks/shopify/orders-create`: Upsert Contact, log 'order_placed' event, evaluate workflow triggers.
2. Implement trigger processor: When an Event occurs, query active Workflows matching `triggerEvent`. Create a WorkflowExecution entry set to the initial node.

Flow Execution Engine:
1. Build an asynchronous queue worker using Cron or Background Jobs (e.g., BullMQ or Vercel Cron):
   - Poll `WorkflowExecution` records where `nextExecutionAt <= NOW()` and `status = 'running'`.
   - Process nodes:
     - 'delay': Update `nextExecutionAt` to current time + delay duration.
     - 'condition': Evaluate contact attributes or event payload (e.g., `payload.total_price > 50`). Advance to true/false branch.
     - 'send_email': Render React Email template using contact/event JSON data. Dispatch via Resend API. Log result to message logs. Advance node.
     - 'end': Mark status as 'completed'.

UI & Visual Editor:
1. Implement a campaign drag-and-drop or block-based template builder using `@react-email/components` exported to raw HTML.
2. Build a flow visualizer using React Flow to render step nodes (Triggers, Delays, Branching, Actions).
3. Build a contacts dashboard with dynamic filter query builder (e.g., Filter where `total_orders > 2` and `emailSubscribed == true`).

Out of Scope:
- Native SMS carrier routing (mock via console/webhook payload).
- Embedded Shopify App iframe configuration.
- Native mobile push notification tokens.

Failure Modes to Guard Against:
- Double-sending on delayed execution retry: Ensure atomic row updates on `WorkflowExecution` processing using database locks.
- Stale state evaluation: Ensure conditional branches query fresh Contact state at execution time, not trigger time.

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