refactor: Refactor UI structure

packages/ui/src/components/Breadcrumbs/Breadcrumbs.tsx

@@ -0,0 +1,102 @@
+import { cn } from '@ermnvldmr/stl';
+import { ChevronRight } from 'lucide-react';
+import React, { memo } from 'react';
+
+import { HStack } from '../HStack/HStack';
+import { Text } from '../Text/Text';
+
+import type { HStackProps } from '../HStack/HStack';
+import type { ClassNameProps, TestIdProps } from '@ermnvldmr/stl';
+
+/**
+ * Props for the Breadcrumbs component.
+ */
+export interface BreadcrumbsProps extends HStackProps {
+  /** Breadcrumb items and separators */
+  children: React.ReactNode;
+}
+
+/**
+ * Root component for hierarchical navigation.
+ */
+const BreadcrumbsRoot = memo(function Breadcrumbs({ children, ...props }: BreadcrumbsProps) {
+  return (
+    <nav aria-label="Breadcrumb">
+      <HStack align="center" as="ol" gap={2} {...props}>
+        {children}
+      </HStack>
+    </nav>
+  );
+});
+
+/**
+ * Individual step in the breadcrumb trail.
+ */
+const BreadcrumbsItem = memo(function BreadcrumbsItem({ 
+  children, 
+  className,
+  'data-testid': testId,
+}: { 
+  children: React.ReactNode;
+  className?: string;
+} & TestIdProps) {
+  return (
+    <li className={className} data-testid={testId}>
+      <Text color="muted" size="m" type="label">
+        {children}
+      </Text>
+    </li>
+  );
+});
+
+/**
+ * Visual divider between breadcrumb items.
+ */
+export interface BreadcrumbsSeparatorProps extends ClassNameProps, TestIdProps {
+  /** Visual variant of the separator */
+  variant?: 'slash' | 'bull' | 'arrow';
+}
+
+const BreadcrumbsSeparator = memo(function BreadcrumbsSeparator({ 
+  variant = 'slash',
+  className,
+  'data-testid': testId,
+}: BreadcrumbsSeparatorProps) {
+  const content = {
+    slash: '/',
+    bull: '•',
+    arrow: <ChevronRight className="size-4" />,
+  };
+
+  return (
+    <li 
+      aria-hidden="true" 
+      className={cn('text-[var(--rb-muted-text)]', className)}
+      data-testid={testId}
+    >
+      <Text color="muted" size="m" type="label">
+        {content[variant]}
+      </Text>
+    </li>
+  );
+});
+
+/**
+ * A hierarchical navigation component.
+ * 
+ * Breadcrumbs provides a flexible way to display the current location within
+ * a site's hierarchy. It uses a compound component pattern for maximum flexibility.
+ * 
+ * @example
+ * ```tsx
+ * <Breadcrumbs>
+ *   <Breadcrumbs.Item><Link href="/">Home</Link></Breadcrumbs.Item>
+ *   <Breadcrumbs.Separator variant="arrow" />
+ *   <Breadcrumbs.Item>Current Page</Breadcrumbs.Item>
+ * </Breadcrumbs>
+ * ```
+ */
+export const Breadcrumbs = Object.assign(BreadcrumbsRoot, {
+  Item: BreadcrumbsItem,
+  Separator: BreadcrumbsSeparator,
+});