feat(ui): Add composite, button, and text components

[alexcarpenter]

Description

Introduces a small component primitives layer on top of the ceramic design system. All components require CeramicThemeProvider in the tree.

Composite — base primitive. Handles render-prop polymorphism, CSS reset, and sx styling. Everything else builds on this.

// defaults to <div>
<Composite sx={t => ({ color: t.colors.primary })} />

// render any element
<Composite render={<section />} sx={{ display: 'flex' }} />

// render function for full prop control
<Composite render={props => <MyEl {...props} />} />

Text — typography variants on top of Composite

<Text>body copy</Text>                              // <p>, body-2, default color
<Text render={<h1 />} variant="heading-1" />        // <h1>
<Text variant="label-3" color="muted" />
<Text font="mono" sx={t => ({ letterSpacing: t.spacing[1] })} />

Button — button variants on top of Composite

<Button>primary</Button>
<Button color="secondary" fullWidth />
<Button render={<a href="/x" />}>link button</Button>  // <a> with button styles
<Button sx={t => ({ borderRadius: t.spacing[3] })} />

Checklist

• pnpm test runs as expected.
• pnpm build runs as expected.
• (If applicable) JSDoc comments have been added or updated for any package exports
• (If applicable) Documentation has been updated

Type of change

• 🐛 Bug fix
• 🌟 New feature
• 🔨 Breaking change
• 📖 Refactoring / dependency upgrade / documentation
• other:

[vercel]

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Project	Deployment	Actions	Updated (UTC)
clerk-js-sandbox	Ready	Preview, Comment	Apr 1, 2026 4:00pm

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