assertFalse(qrList.isExistPrevPage());
    }

    @Test
    public void test_calculatePageInfo_pageNumberList_edgeCases() {
        // Test when current page is at the beginning
        QueryResponseList qrList = new QueryResponseList(null, 0, 10, 0) {
            @Override
            public int size() {
                return 10;
            }
        };

            return content;
        }
        return content.substring(0, maxChars) + "...";
    }

    /**
     * Builds a smart summary of the assistant message for history.
     * Preserves the beginning (direct answer) and end (conclusion) of long responses,
     * omitting the middle section, and appends source titles.
     *
     * @param msg the assistant chat message