feat: add full favicon support

src/pages/favicon.ico.js

@@ -0,0 +1,17 @@
+import sharp from 'sharp'
+import ico from 'ico-endec'
+import path from 'node:path'
+
+// relative to project root
+const faviconSrc = path.resolve('src/assets/favicon.svg')
+
+export const GET = async () => {
+    // resize to 32px PNG
+    const buffer = await sharp(faviconSrc).resize(32).toFormat('png').toBuffer()
+    // generate ico
+    const icoBuffer = ico.encode([buffer])
+
+    return new Response(icoBuffer, {
+        headers: { 'Content-Type': 'image/x-icon' }
+    })
+}