{"message":"Chat Worker - WebSocket Chat System","endpoints":{"WebSocket /chat?token=JWT":"Connect to chat (requires JWT token)","GET /health":"Health check"},"features":["WebSocket real-time messaging","JWT authentication required","Durable Object persistence","Message broadcasting","User presence tracking","Rate limiting protection"],"limits":{"max_users":100,"max_message_length":500,"rate_limit_window":60000,"max_messages_per_window":30}}