Theme Studio V2

[SunilKumarKV]

Build a production-grade Theme Studio on top of the existing Theme Engine.

Scope:

• typed theme presets: Glass, SaaS, Neon, Minimal, Gaming, Luxury
• live runtime theme switching across shell and studios
• real preview workspace using RainbowCode components
• controls for colors, typography, radius, spacing
• validated theme.json import
• theme.json/theme.css/tailwind.tokens.ts export
• tests for presets, import/export, runtime apply, and previews

Constraints:

• no architecture rewrite
• no duplicated state
• no fake product content
• no breaking changes
• all checks must pass

Validation:

• pnpm typecheck
• pnpm build
• pnpm lint
• pnpm test