Can I vibe code Personizely?

Create a complete, lightweight JavaScript customer personalization engine for an e-commerce website, along with a minimal Node.js dashboard backend. 

1. DATA MODEL:
- Campaign: id, name, priority, rules (JSON), variants (array of { id, weight, HTMLContent, targetSelector, actionType: 'replace' | 'modal' | 'banner' }).
- Rules Engine Schema: supports URL contains/matches, Cookie value, Cart value (integer threshold), Device type, Visitor session count, and Country Code (via GeoIP header).

2. CLIENT-SIDE SDK (Vanilla JS, <10KB, zero dependencies):
- Initialize with CDN script tag passing API key.
- Fetch active campaign payload once per session and cache in sessionStorage.
- Evaluate rules against current window.location, document.cookie, and window.Shopify.cart object.
- Implement 'exit-intent' event handler (mouseleave towards window top on desktop, back-button/scroll-velocity trigger on mobile).
- Apply content replacements using requestAnimationFrame to prevent flashing (avoid Cumulative Layout Shift).
- Save impression/conversion events to an async navigator.sendBeacon payload endpoint to avoid blocking user flow.

3. BACKEND ADMIN DASHBOARD (Express + React):
- CRUD operations for Campaigns and Targeting Rules.
- Simple visual HTML/CSS code editor for modal overlays and inline banners.
- Basic analytics reporting route showing Impressions, Clicks, and Conversion Rate per variant.

4. FAILURE MODES & OUT OF SCOPE:
- Script failure must silent-fail without breaking core shop navigation or checkout buttons.
- Do NOT build a full visual drag-and-drop WYSIWYG editor engine; use code/HTML editing with direct live preview.

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