feat: add experience entity (ExperienceCard) and entities barrel export

src/entities/experience/index.ts

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+export { ExperienceCard } from './ui/ExperienceCard'

src/entities/experience/ui/ExperienceCard.test.tsx

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+import { describe, it, expect } from 'vitest'
+import { render, screen } from '@testing-library/react'
+import { ExperienceCard } from './ExperienceCard'
+
+const DEFAULT_PROPS = {
+  title: 'Senior Developer',
+  company: 'Acme Corp',
+  period: '2021 – 2024',
+  description: 'Built scalable frontend systems.',
+}
+
+describe('ExperienceCard', () => {
+  describe('rendering', () => {
+    it('renders the job title', () => {
+      render(<ExperienceCard {...DEFAULT_PROPS} />)
+      expect(screen.getByText('Senior Developer')).toBeInTheDocument()
+    })
+
+    it('renders the company name', () => {
+      render(<ExperienceCard {...DEFAULT_PROPS} />)
+      expect(screen.getByText('Acme Corp')).toBeInTheDocument()
+    })
+
+    it('renders the period badge', () => {
+      render(<ExperienceCard {...DEFAULT_PROPS} />)
+      expect(screen.getByText('2021 – 2024')).toBeInTheDocument()
+    })
+
+    it('renders the description', () => {
+      render(<ExperienceCard {...DEFAULT_PROPS} />)
+      expect(screen.getByText('Built scalable frontend systems.')).toBeInTheDocument()
+    })
+  })
+
+  describe('structure', () => {
+    it('title is rendered as an h4', () => {
+      render(<ExperienceCard {...DEFAULT_PROPS} />)
+      expect(screen.getByRole('heading', { level: 4 })).toHaveTextContent('Senior Developer')
+    })
+
+    it('period badge has brutal-border, bg-carbon-black, text-ochre-clay, text-sm', () => {
+      render(<ExperienceCard {...DEFAULT_PROPS} />)
+      const badge = screen.getByText('2021 – 2024')
+      expect(badge).toHaveClass('brutal-border', 'bg-carbon-black', 'text-ochre-clay', 'text-sm')
+    })
+
+    it('company paragraph has opacity-80', () => {
+      render(<ExperienceCard {...DEFAULT_PROPS} />)
+      const company = screen.getByText('Acme Corp')
+      expect(company.tagName).toBe('P')
+      expect(company).toHaveClass('opacity-80')
+    })
+
+    it('description paragraph has text-base and max-w-[700px]', () => {
+      render(<ExperienceCard {...DEFAULT_PROPS} />)
+      const desc = screen.getByText('Built scalable frontend systems.')
+      expect(desc).toHaveClass('text-base', 'max-w-[700px]')
+    })
+
+    it('card has brutal-border class (from Card component)', () => {
+      const { container } = render(<ExperienceCard {...DEFAULT_PROPS} />)
+      expect(container.firstChild).toHaveClass('brutal-border')
+    })
+  })
+
+  describe('className passthrough', () => {
+    it('forwards className to the card', () => {
+      const { container } = render(<ExperienceCard {...DEFAULT_PROPS} className="custom-class" />)
+      expect(container.firstChild).toHaveClass('custom-class')
+    })
+  })
+})

src/entities/experience/ui/ExperienceCard.tsx

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+import { Card } from '$shared/ui'
+
+type Props = {
+  /**
+   * Job title
+   */
+  title: string
+  /**
+   * Company name
+   */
+  company: string
+  /**
+   * Employment period (e.g. "2021 – 2024")
+   */
+  period: string
+  /**
+   * Description of responsibilities and achievements
+   */
+  description: string
+  /**
+   * Additional CSS classes forwarded to the card
+   */
+  className?: string
+}
+
+/**
+ * Work experience card with title, company, period, and description.
+ */
+export function ExperienceCard({ title, company, period, description, className }: Props) {
+  return (
+    <Card className={className}>
+      <div className="flex flex-col md:flex-row md:items-start md:justify-between mb-4 gap-4">
+        <div className="flex-1 max-w-[700px]">
+          <h4>{title}</h4>
+          <p className="text-base opacity-80">{company}</p>
+        </div>
+        <span className="brutal-border px-4 py-2 bg-carbon-black text-ochre-clay text-sm self-start">
+          {period}
+        </span>
+      </div>
+      <p className="text-base max-w-[700px]">{description}</p>
+    </Card>
+  )
+}

src/entities/index.ts

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+export * from './project'
+export * from './experience'