first commit: Complete phishing test management panel with Node.js backend and React frontend

backend/.env.example

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+# Server Configuration
+NODE_ENV=development
+PORT=3000
+BASE_URL=http://localhost:3000
+
+# Session Secret
+SESSION_SECRET=your-secret-key-change-this-in-production
+
+# Database
+DB_PATH=./database/oltalama.db
+
+# Gmail Configuration (App Password gerekli)
+GMAIL_USER=your-email@gmail.com
+GMAIL_APP_PASSWORD=your-16-digit-app-password
+GMAIL_FROM_NAME=Güvenlik Ekibi
+
+# Telegram Bot Configuration
+TELEGRAM_BOT_TOKEN=your-bot-token-here
+TELEGRAM_CHAT_ID=your-chat-id-here
+
+# Admin User (İlk kurulumda)
+ADMIN_USERNAME=admin
+ADMIN_PASSWORD=admin123
+
+# Logging
+LOG_LEVEL=info