feat: switch from jest to vitest

components/Button/Button.test.tsx

@@ -0,0 +1,24 @@
+import { describe, it, expect } from 'vitest'
+import { render, screen } from '@testing-library/react'
+import { Button } from './Button'
+
+describe('Button', () => {
+  it('renders with children', () => {
+    render(<Button href="/test">Click me</Button>)
+    expect(screen.getByText('Click me')).toBeInTheDocument()
+  })
+
+  it('applies correct intent classes', () => {
+    const { container } = render(<Button href="/test" intent="secondary">Secondary</Button>)
+    const link = container.querySelector('a')
+    expect(link).toHaveClass('bg-transparent')
+    expect(link).toHaveClass('text-blue-400')
+  })
+
+  it('applies correct size classes', () => {
+    const { container } = render(<Button href="/test" size="sm">Small</Button>)
+    const link = container.querySelector('a')
+    expect(link).toHaveClass('text-sm')
+    expect(link).toHaveClass('min-w-20')
+  })
+})