Update site title from 'Create Next App' to 'Semantic Version Visualizer'

- Changed page title to better reflect the project's purpose
- Updated description to match the interactive semver learning tool

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: killerapp

app/layout.tsx

@@ -13,8 +13,8 @@ const geistMono = Geist_Mono({
 });
 
 export const metadata: Metadata = {
-  title: "Create Next App",
-  description: "Generated by create next app",
+  title: "Semantic Version Visualizer",
+  description: "Interactive tool to learn and understand Semantic Versioning through visual demonstrations",
 };
 
 export default function RootLayout({