feat: add accessible themeable Button component to design system - #1103
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joelpeace48-cell merged 5 commits intoAug 6, 2026
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- Variants: primary, secondary, danger, ghost - Sizes: sm, md, lg - States: default, hover, focus, disabled, loading (spinner + aria-busy) - Fully keyboard accessible (Enter/Space) - Focus ring via :focus-visible (invisible to mouse users) - Themed via CSS custom properties — flips with [data-theme='light'] - Storybook stories for all variants, sizes and states - 24 unit tests — all passing Closes FinesseStudioLab#969
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Summary
Builds the Button component for the shared design system per issue #969.
What's included
Button.jsx — accessible, themeable component
Button.css — styled via CSS custom properties, flips with [data-theme='light']
Button.stories.jsx — Storybook stories for all variants, sizes and states
Button.test.jsx — 24 unit tests, all passing
index.js — exports Button from the barrel
Variants
primary, secondary, danger, ghost
Sizes
sm, md, lg
States
default, hover, focus, disabled, loading (spinner + aria-busy)
Accessibility
Native element — correct role, keyboard and screen-reader support out of the box
aria-busy set while loading; visually-hidden "Loading" label keeps AT informed
aria-disabled + disabled both applied when disabled
Focus ring via :focus-visible — invisible to mouse users
Fully keyboard accessible via Enter and Space
Testing
24 unit tests covering all variants, sizes, states, keyboard interactions and accessibility attributes — all passing. No existing tests broken.
Closes #969