add toggle for allowing registrations from the frontend

.env.production

@@ -9,6 +9,10 @@ MONGODB_DATABASE=scoffer
 # JWT Secret for Backend (CHANGE THIS IN PRODUCTION!)
 JWT_SECRET=your-super-secret-jwt-key-change-this-in-production
 
+# Registration Control
+# Set to 'false' to disable user registration (recommended for production)
+ALLOW_REGISTRATION=false
+
 # Port Configuration (customize as needed for your server)
 FRONTEND_PORT=3000
 BACKEND_PORT=5000
@@ -21,8 +25,5 @@ MONGO_EXPRESS_PORT=8081
 # Replace 'your-domain.com' with your actual domain
 REACT_APP_API_URL=https://your-domain.com/api
 
-# Alternative: If backend runs on different port/subdomain
-# REACT_APP_API_URL=https://api.your-domain.com
-
 # For local testing with containers (no SSL)
 # REACT_APP_API_URL=http://localhost:5000/api