refactor: complete application rewrite with modern UI

src/components/ui/index.ts

@@ -0,0 +1,16 @@
+export { Button } from './Button';
+export type { ButtonVariant, ButtonSize } from './Button';
+
+export { Input } from './Input';
+
+export { Card, CardHeader, CardBody, CardFooter } from './Card';
+
+export { Select } from './Select';
+
+export { Badge } from './Badge';
+export type { BadgeVariant } from './Badge';
+
+export { Tabs, TabPanel } from './Tabs';
+export type { Tab } from './Tabs';
+
+export { CodeBlock } from './CodeBlock';