Refining a recreation

Refine in natural language. Every change is additive, not a restart:

• Refinements are additions on top of the current build, not a from-scratch regeneration
• Position, favorite status, and ID are preserved across refinements
• Every refinement auto-snapshots to version history before it applies
• Iterate as many times as you want — there's no limit on refinement passes
• Example phrases: "make the hero darker", "swap the CTA copy to something punchier", "add a pricing table below the features section"