Fix SIWE auth configuration

Author: Markeljan

app/api/auth/[...nextauth]/route.ts

@@ -1,3 +1,3 @@
-export const runtime = "edge"
+export const runtime = "nodejs"
 
 export { GET, POST } from "@/auth"

auth.ts

@@ -41,6 +41,8 @@ export const {
   signIn,
   signOut,
 } = NextAuth({
+  secret: process.env.AUTH_SECRET,
+  trustHost: true,
   providers: [
     Credentials({
       name: "Ethereum",