/**
     * Stream chat using Server-Sent Events
     */
    function streamChat(message, thinkingId) {
        var url = config.streamUrl + '?message=' + encodeURIComponent(message);
        if (state.sessionId) {
            url += '&sessionId=' + encodeURIComponent(state.sessionId);
        }
        url += getFilterQueryParams();

        var eventSource = new EventSource(url);
        state.errorHandled = false;