Tailwind Theme Builder Set up a fully themed Tailwind v4 + shadcn/ui project with dark mode. Produces configured CSS, theme provider, and working component library. Architecture: The Four-Step Pattern Tailwind v4 requires a specific architecture for CSS variable-based theming. This pattern is mandatory -- skipping or modifying steps breaks the theme. How It Works Dark mode switching: Best Practices - Semantic names: Use not - Foreground pairing: Every background colour needs a foreground ( + ) - WCAG contrast: Normal text 4.5:1, large text 3:1, UI components 3:1 - Chart colours: Use separate…