{"status":"ok","message":"MySellerCentral Chatbot API is running","version":"2.0.0","endpoints":{"sendMessage":"/api/chat/message","streamMessage":"/api/chat/stream","getConversationMessages":"/api/chat/conversation/{conversation_id}/messages","openConversation":"/api/chat/conversation/{conversation_id}/open","getUserConversations":"/api/user/{user_id}/conversations","legacyChat":"/api/chat","health":"/health"}}