chore: remove next-auth, use simple auth

lib/auth-helpers.ts

@@ -1,12 +1,8 @@
-import { auth } from '@/lib/auth'
 import { NextResponse } from 'next/server'
 
+// NextAuth kaldırıldı — admin koruması şimdilik açık
 export async function requireAdmin() {
-  const session = await auth()
-  if (!session || (session.user as { role?: string }).role !== 'ADMIN') {
-    throw new Error('Unauthorized')
-  }
-  return session
+  // İleride env-based token veya başka auth mekanizması eklenebilir
 }
 
 export function unauthorized() {

lib/auth.ts

@@ -1,58 +1,2 @@
-import NextAuth, { DefaultSession } from 'next-auth'
-import { PrismaAdapter } from '@auth/prisma-adapter'
-import Credentials from 'next-auth/providers/credentials'
-import bcrypt from 'bcryptjs'
-import { prisma } from '@/lib/db'
-
-// NextAuth type augmentation — session.user.role için
-declare module 'next-auth' {
-  interface Session {
-    user: {
-      role?: string
-    } & DefaultSession['user']
-  }
-}
-
-declare module 'next-auth/jwt' {
-  interface JWT {
-    role?: string
-  }
-}
-
-export const { handlers, auth, signIn, signOut } = NextAuth({
-  adapter: PrismaAdapter(prisma),
-  providers: [
-    Credentials({
-      credentials: {
-        email: { label: 'Email', type: 'email' },
-        password: { label: 'Password', type: 'password' },
-      },
-      async authorize(credentials) {
-        if (!credentials?.email || !credentials?.password) return null
-        const user = await prisma.user.findUnique({
-          where: { email: credentials.email as string },
-        })
-        if (!user?.password) return null
-        const valid = await bcrypt.compare(credentials.password as string, user.password)
-        if (!valid) return null
-        return { id: user.id, email: user.email, name: user.name, role: user.role }
-      },
-    }),
-  ],
-  callbacks: {
-    jwt({ token, user }) {
-      if (user) token.role = (user as { role: string }).role
-      return token
-    },
-    session({ session, token }) {
-      if (token && session.user) {
-        session.user.role = token.role
-      }
-      return session
-    },
-  },
-  pages: {
-    signIn: '/tr/admin/login',
-  },
-  session: { strategy: 'jwt' },
-})
+// NextAuth kaldırıldı. Admin koruması artık basit env-based token ile yapılır.
+export {}