chore: remove next-auth, use simple auth

app/[locale]/admin/login/page.tsx

@@ -1,13 +1,11 @@
 'use client'
 
 import { useState } from 'react'
-import { signIn } from 'next-auth/react'
 import { useRouter } from 'next/navigation'
 import Image from 'next/image'
 
 export default function AdminLoginPage() {
   const router = useRouter()
-  const [email, setEmail] = useState('')
   const [password, setPassword] = useState('')
   const [error, setError] = useState('')
   const [loading, setLoading] = useState(false)
@@ -17,17 +15,14 @@ export default function AdminLoginPage() {
     setLoading(true)
     setError('')
 
-    const result = await signIn('credentials', {
-      email,
-      password,
-      redirect: false,
-    })
-
-    if (result?.error) {
-      setError('Email veya şifre hatalı.')
-      setLoading(false)
-    } else {
+    // Basit şifre kontrolü — ileride API'ye bağlanabilir
+    const adminPass = process.env.NEXT_PUBLIC_ADMIN_PASSWORD || 'vesta2025'
+    if (password === adminPass) {
+      sessionStorage.setItem('admin_auth', '1')
       router.push('/tr/admin')
+    } else {
+      setError('Şifre hatalı.')
+      setLoading(false)
     }
   }
 
@@ -46,16 +41,6 @@ export default function AdminLoginPage() {
         </div>
 
         <form onSubmit={handleSubmit} className="bg-white/5 border border-white/10 rounded-2xl p-8 space-y-4">
-          <div>
-            <input
-              type="email"
-              value={email}
-              onChange={(e) => setEmail(e.target.value)}
-              placeholder="Email"
-              required
-              className="w-full bg-white/10 border border-white/10 rounded-xl px-4 py-3 text-white placeholder:text-white/30 focus:outline-none focus:ring-2 focus:ring-vesta-earth/50"
-            />
-          </div>
           <div>
             <input
               type="password"

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

@@ -1,2 +1,9 @@
-import { handlers } from '@/lib/auth'
-export const { GET, POST } = handlers
+import { NextResponse } from 'next/server'
+
+// NextAuth kaldırıldı
+export async function GET() {
+  return NextResponse.json({ error: 'Not found' }, { status: 404 })
+}
+export async function POST() {
+  return NextResponse.json({ error: 'Not found' }, { status: 404 })
+}