security: gerçek .env dosyası takipten çıkarıldı ve .env.example güncellendi

backend/.env.example

@@ -3,3 +3,12 @@ RTORRENT_SOCKET=/tmp/rtorrent.sock
 
 # Backend Listen Port
 PORT=3000
+
+# Database URL
+DATABASE_URL=sqlite:vibetorrent.db
+
+# VAPID Keys for Push Notifications
+# Generate new keys for production using: npx web-push generate-vapid-keys
+VAPID_PUBLIC_KEY=YOUR_PUBLIC_VAPID_KEY
+VAPID_PRIVATE_KEY=YOUR_PRIVATE_VAPID_KEY
+VAPID_EMAIL=mailto:your-email@example.com