spartan/ui is now Tailwind CSS v4 only. The v3 compatibility layer added
complexity across the brain preset, the CLI generators and the docs, all of
which is removed here.
Brain:
- Delete the v3 JavaScript preset (hlm-tailwind-preset.js) and its package
export; the v4 CSS preset (hlm-tailwind-preset.css) is now the only preset.
- Bump the tailwindcss peer dependency to >=4.0.0 and declare tw-animate-css
as a peer, since it is imported by the CSS preset.
CLI:
- Remove Tailwind version detection and the v3 confirmation prompt; the theme
generator always emits the v4 stylesheet (preset import plus OKLCH theme).
- Drop the legacy HSL theme table, the v3-only CDK overlay import branch, the
vestigial addCdkStyles option and the unused registryItemTailwindSchema.
Docs and tooling:
- Remove the Tailwind v3 installation and theming sections and snippets.
- Drop autoprefixer; Tailwind v4 handles vendor prefixing via @tailwindcss/postcss.
BREAKING CHANGE: Tailwind CSS v3 is no longer supported. The
@spartan-ng/brain/hlm-tailwind-preset (JS) package export has been removed; use
the @spartan-ng/brain/hlm-tailwind-preset.css preset with Tailwind CSS v4. The
tailwindcss peer dependency now requires >=4.0.0.
Ashley Hunter