feat(renderer): add shadcn slider primitive

tests/component/ui/slider.test.tsx

@@ -0,0 +1,10 @@
+import { describe, it, expect, vi } from 'vitest';
+import { render, screen } from '@testing-library/react';
+import { Slider } from '@/components/ui/slider';
+
+describe('Slider', () => {
+  it('renders with default value', () => {
+    render(<Slider aria-label="volume" defaultValue={[50]} onValueChange={vi.fn()} />);
+    expect(screen.getByRole('slider', { name: /volume/i })).toHaveAttribute('aria-valuenow', '50');
+  });
+});