traffic-audit-server/src/main/java/com/trafficaudit/reportexport/service/ReportExportService.java
@@ -3232,7 +3232,9 @@
                log.info("汇总工作簿裁剪至 {} 月完成,清空/改写单元格数={}", toMonth, trimmed);
            }
            dynamicSummaryYear(wb, year);
            applyTwoDecimalFormat(wb); // 汇总大表保留人工母版列宽/版式:不做 autoFit(长公式会把列宽顶爆)
            cleanSummarySheetPresentation(wb); // 取消各页筛选、还原隐藏行(否则“班线包车”等页看起来像缺数据)
            applyTwoDecimalFormat(wb); // 数值显示两位小数(保留全精度);% / 日期等既有样式不改变
            autoFitContentColumns(wb); // 按数据自动加宽列宽(只加宽不缩窄,跳过合并标题格,防长文本把单列撑爆)
            if (!wb.getCTWorkbook().isSetCalcPr()) wb.getCTWorkbook().addNewCalcPr();
            wb.getCTWorkbook().getCalcPr().setFullCalcOnLoad(true); // 还原/改写公式后打开即重算
            return toBytes(wb);
@@ -4800,6 +4802,26 @@
    }
    /** 汇总表导出后按内容自动加宽列宽(只加宽不缩窄;跳过合并单元格标题,防长标题把单列撑爆) */
    /** 汇总大表输出前清理母版残留下来的筛选与行隐藏:筛选箭头/隐藏行会让整页看起来“缺数据” */
    private void cleanSummarySheetPresentation(org.apache.poi.ss.usermodel.Workbook wb) {
        if (wb == null) return;
        for (int s = 0; s < wb.getNumberOfSheets(); s++) {
            org.apache.poi.ss.usermodel.Sheet sh = wb.getSheetAt(s);
            if (sh == null) continue;
            if (sh instanceof org.apache.poi.xssf.usermodel.XSSFSheet) {
                org.apache.poi.xssf.usermodel.XSSFSheet xs = (org.apache.poi.xssf.usermodel.XSSFSheet) sh;
                if (xs.getCTWorksheet().isSetAutoFilter()) xs.getCTWorksheet().unsetAutoFilter();
                for (org.apache.poi.ss.usermodel.Row row : xs) {
                    if (row == null) continue;
                    org.apache.poi.xssf.usermodel.XSSFRow xr = (org.apache.poi.xssf.usermodel.XSSFRow) row;
                    if (xr.getCTRow().isSetHidden()) xr.getCTRow().unsetHidden();
                }
            } else {
                sh.setAutoFilter(null);
            }
        }
    }
    private void autoFitContentColumns(org.apache.poi.ss.usermodel.Workbook wb) {
        if (wb == null) return;
        org.apache.poi.ss.usermodel.DataFormatter dfmt = new org.apache.poi.ss.usermodel.DataFormatter();