fix: align nextauth adapter type

platform/web/lib/auth.ts

@@ -1,5 +1,5 @@
 import NextAuth, { type DefaultSession } from 'next-auth';
-import type { Adapter } from '@auth/core/adapters';
+import type { Adapter } from 'next-auth/adapters';
 import Credentials from 'next-auth/providers/credentials';
 import { PrismaAdapter } from '@auth/prisma-adapter';
 import { prisma } from './db';
@@ -19,7 +19,7 @@ declare module 'next-auth' {
 }
 
 export const { handlers, auth, signIn, signOut } = NextAuth({
-  adapter: PrismaAdapter(prisma) as Adapter,
+  adapter: PrismaAdapter(prisma) as unknown as Adapter,
   providers: [
     Credentials({
       name: 'Email',