Refactor multiline formatting, link definitions, and code consistency across components and tests

- Improved readability by updating multiline statements and object definitions.
- Applied consistent link and button wrapping in `DemoSection` and other components.
- Enhanced test assertions and helper functions with uniform formatting and parentheses usage.

frontend/src/app/demos/page.tsx

@@ -27,7 +27,8 @@ import { Separator } from '@/components/ui/separator';
 
 export const metadata: Metadata = {
   title: 'Demo Tour | FastNext Template',
-  description: 'Try all features with demo credentials - comprehensive guide to the FastNext template',
+  description:
+    'Try all features with demo credentials - comprehensive guide to the FastNext template',
 };
 
 const demoCategories = [
@@ -36,7 +37,12 @@ const demoCategories = [
     title: 'Design System Hub',
     description: 'Browse components, layouts, spacing, and forms with live examples',
     href: '/dev',
-    features: ['All UI components', 'Layout patterns', 'Spacing philosophy', 'Form implementations'],
+    features: [
+      'All UI components',
+      'Layout patterns',
+      'Spacing philosophy',
+      'Form implementations',
+    ],
     credentials: null,
   },
   {
@@ -260,7 +266,8 @@ export default function DemoTourPage() {
                       {/* CTA */}
                       <Button asChild className="w-full gap-2">
                         <Link href={category.href}>
-                          {category.credentials ? 'Try Now' : 'Explore'} <ArrowRight className="h-4 w-4" />
+                          {category.credentials ? 'Try Now' : 'Explore'}{' '}
+                          <ArrowRight className="h-4 w-4" />
                         </Link>
                       </Button>
                     </CardContent>

frontend/src/app/dev/page.tsx

@@ -14,7 +14,8 @@ import { Separator } from '@/components/ui/separator';
 
 export const metadata: Metadata = {
   title: 'Design System Hub | FastNext Template',
-  description: 'Interactive design system demonstrations with live examples - explore components, layouts, spacing, and forms built with shadcn/ui and Tailwind CSS',
+  description:
+    'Interactive design system demonstrations with live examples - explore components, layouts, spacing, and forms built with shadcn/ui and Tailwind CSS',
 };
 
 const demoPages = [

frontend/src/components/dev/DevLayout.tsx

@@ -10,7 +10,17 @@
 
 import Link from 'next/link';
 import { usePathname } from 'next/navigation';
-import { Code2, Palette, LayoutDashboard, Box, FileText, BookOpen, Home, ArrowLeft, Rocket } from 'lucide-react';
+import {
+  Code2,
+  Palette,
+  LayoutDashboard,
+  Box,
+  FileText,
+  BookOpen,
+  Home,
+  ArrowLeft,
+  Rocket,
+} from 'lucide-react';
 import { Button } from '@/components/ui/button';
 import { Badge } from '@/components/ui/badge';
 import { ThemeToggle } from '@/components/theme';

frontend/src/components/home/DemoSection.tsx

@@ -120,9 +120,7 @@ export function DemoSection() {
         transition={{ duration: 0.6, delay: 0.4 }}
       >
         <Button asChild variant="outline" size="lg" className="gap-2">
-          <Link href="/demos">
-            View Complete Demo Tour →
-          </Link>
+          <Link href="/demos">View Complete Demo Tour →</Link>
         </Button>
       </motion.div>
     </section>