Base scripts and templates added

.env.example

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+# Flask 2FA Authentication Application Environment Configuration
+# Copy this file to .env and modify the values as needed
+
+# Flask Configuration
+FLASK_CONFIG=development
+FLASK_APP=run.py
+FLASK_ENV=development
+
+# Security Configuration (CRITICAL: Change these in production!)
+SECRET_KEY=your-secret-key-change-this-in-production-use-secrets-manager-or-random-generator
+
+# Database Configuration
+DEV_DATABASE_URL=sqlite:///dev.db
+DATABASE_URL=sqlite:///app.db
+
+# Production Database Example (uncomment and modify for production)
+# DATABASE_URL=postgresql://username:password@localhost/flask_2fa_prod
+
+# Application Settings
+DEBUG=True
+
+# Security Headers (Production only)
+# SESSION_COOKIE_SECURE=True
+# SESSION_COOKIE_HTTPONLY=True
+# SESSION_COOKIE_SAMESITE=Lax
+
+# Logging Configuration
+LOG_LEVEL=INFO
+LOG_FILE=app.log
+
+# SMTP Configuration (for future email features)
+# MAIL_SERVER=smtp.gmail.com
+# MAIL_PORT=587
+# MAIL_USE_TLS=True
+# MAIL_USERNAME=your-email@gmail.com
+# MAIL_PASSWORD=your-app-password
+
+# Development Notes:
+# 1. Never commit the .env file to version control
+# 2. Use strong, randomly generated SECRET_KEY in production
+# 3. Use environment-specific database URLs
+# 4. Enable HTTPS and secure cookies in production
+# 5. Consider using external secret management services