▶️ Email + Parola ile Giriş

1. UI: /giris form > email + parola + 'Beni hatırla'
2. POST /api/auth/login { email, parola }
3. Backend: Bcrypt compare + JWT issue
4. Set-Cookie: access_token (HTTPOnly, 5-30dk)
5. localStorage: fvt-auth = refresh_token
6. Redirect / + GET /api/auth/me

🔌 Endpoint'ler