feat: integrate icon.png as favicon and remove legacy icon.svg

app/layout.tsx

@@ -8,31 +8,11 @@ export const metadata: Metadata = {
   title: 'Kit - Your Creative Toolkit',
   description: 'A curated collection of creative and utility tools for developers and creators. Features file conversion, image editing, and color manipulation.',
   keywords: ['tools', 'utilities', 'file converter', 'image editor', 'color palette', 'creative toolkit', 'convert', 'paint', 'pastel', 'open source'],
-  authors: [{ name: 'pivoine.art' }],
-  creator: 'pivoine.art',
-  publisher: 'pivoine.art',
   metadataBase: new URL(siteUrl),
-  openGraph: {
-    title: 'Kit - Your Creative Toolkit',
-    description: 'A curated collection of creative and utility tools for developers and creators. Privacy-first, open source, and free to use.',
-    url: siteUrl,
-    siteName: 'Kit',
-    locale: 'en_US',
-    type: 'website',
-    images: [
-      {
-        url: '/og-image.png',
-        width: 1200,
-        height: 630,
-        alt: 'Kit - Your Creative Toolkit',
-      },
-    ],
-  },
-  twitter: {
-    card: 'summary_large_image',
-    title: 'Kit - Your Creative Toolkit',
-    description: 'A curated collection of creative and utility tools for developers and creators.',
-    images: ['/og-image.png'],
+  icons: {
+    icon: '/icon.png',
+    shortcut: '/icon.png',
+    apple: '/icon.png',
   },
   robots: {
     index: true,