session.addMessage(assistantMessage);
                logger.info("[RAG] Chat completed (unclear). sessionId={}, elapsedTime={}ms", session.getSessionId(),
                        System.currentTimeMillis() - startTime);
                return new ChatResult(session.getSessionId(), assistantMessage, Collections.emptyList());
            }

            // For SUMMARY intent, search by URL; for SEARCH/FAQ, search with query