**Design System Enhancements:** Replace .md links with clean paths in /dev documentation. Migrate anchor tags (<a>) to Next.js <Link> components for internal navigation. Add dynamic [...slug] markdown route for rendering docs. Introduce MarkdownContent for styled markdown rendering with syntax highlighting. Perform general cleanup of unused imports and variables in design system files. Fix minor wording issues.

frontend/src/components/dev/ComponentShowcase.tsx

@@ -13,7 +13,7 @@ import Link from 'next/link';
 import {
   Moon, Sun, Mail, User,
   Settings, LogOut, Shield, AlertCircle, Info,
-  CheckCircle2, AlertTriangle, Trash2, ArrowLeft
+  Trash2, ArrowLeft
 } from 'lucide-react';
 import { Button } from '@/components/ui/button';
 import {

frontend/src/components/dev/Example.tsx

@@ -8,7 +8,6 @@
 
 'use client';
 
-import { useState } from 'react';
 import { Code2, Eye } from 'lucide-react';
 import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card';
 import { Tabs, TabsContent, TabsList, TabsTrigger } from '@/components/ui/tabs';
@@ -49,7 +48,6 @@ export function Example({
   centered = false,
   tags,
 }: ExampleProps) {
-  const [showCode, setShowCode] = useState(false);
 
   // Compact variant - no card wrapper
   if (variant === 'compact') {