Smart A/B Variant Generator & Insights

Enable merchants to generate alternate CTAs, hero layouts, and color/theme variants using Copilot SDK, with workflow to easily create, track, and analyze A/B tests for conversion improvement.

- Place in: theme-editor (variants UI), analytics dashboard
- Backend: Experiment creation & analytics
- Monetization: Premium optimization tier
- KPIs: Test win rate, conversion lift

Effort: Medium → High.