*/
    RelevanceEvaluationResult evaluateResults(String userMessage, String query, List<Map<String, Object>> searchResults);

    /**
     * Generates an answer using document content (synchronous version for non-enhanced flow).
     *
     * @param userMessage the user's message
     * @param documents the documents with content
     * @param history the conversation history
     * @return the chat response

import org.apache.logging.log4j.Logger;

/**
 * A thread that reads from an input stream line by line and maintains a buffer of recent lines.
 * This class provides functionality to read input stream data asynchronously,
 * optionally process each line with a callback function, and maintain a circular buffer
 * of recent lines for retrieval.
 */
public class InputStreamThread extends Thread {
    /** Logger instance for this class */