Turn off dev indicator

next.config.ts

@@ -1,7 +1,10 @@
 import type { NextConfig } from 'next'
 
 const nextConfig: NextConfig = {
-  /* config options here */
+  devIndicators: {
+    buildActivity: false,
+    appIsrStatus: false,
+  },
 }
 
 export default nextConfig