feat: Introduce Prisma ORM client and initial database/authentication utilities.

src/lib/auth.ts

@@ -1,6 +1,7 @@
 import NextAuth from 'next-auth';
 import Credentials from 'next-auth/providers/credentials';
 import bcrypt from 'bcryptjs';
+import { prisma } from '@/lib/prisma';
 
 export const { handlers, signIn, signOut, auth } = NextAuth({
     providers: [
@@ -13,10 +14,6 @@ export const { handlers, signIn, signOut, auth } = NextAuth({
             async authorize(credentials) {
                 if (!credentials?.email || !credentials?.password) return null;
 
-                // Lazy import to avoid PrismaClient initialization during build
-                const { default: getDB } = await import('./prisma');
-                const prisma = getDB();
-
                 const user = await prisma.user.findUnique({
                     where: { email: credentials.email as string },
                 });