history.add(LlmMessage.assistant("Fess is a search server."));

        final String result = client.regenerateQuery("How about Docker?", "title:\"Fess\"^2 +Docker", "no_relevant_results", history);

        assertEquals("Docker setup", result);

        // Verify history was included in the request
        final LlmChatRequest capturedRequest = client.getLastChatRequest();

                        logger.info("[RAG] No relevant results in evaluation, regenerating query. originalQuery={}", query);
                        final String newQuery = llmClientManager.regenerateQuery(userMessage, query, "no_relevant_results", history);

                        boolean fallbackSucceeded = false;
                        if (StringUtil.isNotBlank(newQuery) && !newQuery.equals(query)) {

        try {
            final boolean hasRelevant = extractJsonBoolean(response, "has_relevant");
            if (!hasRelevant) {
                return RelevanceEvaluationResult.noRelevantResults();
            }

            final List<Integer> indexes = extractJsonIntArray(response, "relevant_indexes");
            final List<String> docIds = indexes.stream()