feat: Add favicon and logo, configure app icons to use favicon, and unignore public directory.

.gitignore

@@ -86,7 +86,6 @@ dist
 
 # Gatsby files
 .cache/
-public
 
 # Vite build output
 dist/

src/app/layout.tsx

@@ -9,9 +9,9 @@ export const metadata: Metadata = {
   title: 'RepoHub - Cross-Platform Package Manager',
   description: 'Simplify software installation across Linux, Windows, and macOS with official repositories',
   icons: {
-    icon: '/logo.png',
-    shortcut: '/logo.png',
-    apple: '/logo.png',
+    icon: '/favicon.ico',
+    shortcut: '/favicon.ico',
+    apple: '/favicon.ico',
   },
 }