Phase 0

Canopy scaffold

Next.js App Router, TypeScript with allowJs, Tailwind 3 with the brand config carried over. No application code ported yet — see docs/MIGRATION.md.

Design system check

Brand colours (tailwind.config.js)

Buttons (brand.css)

Runtime-composed component classes

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If any swatch is transparent, a button is unstyled, or a tier/pill badge renders as plain text, the brand pipeline is broken — fix that before porting components.