fix: 报表预览显示指标名与单位；货运量合计不再重复除万（模板列为万吨）

zhizhijie

2026-09-04 eca25327c87c70f1b834815102402fc8eea7a7f0

 traffic-audit-web/src/views/ReportExport.vue

@@ -115,8 +115,9 @@
              <table class="preview-summary" v-if="it.summary && it.summary.length">
                <tbody>
                  <tr v-for="(s, i) in it.summary" :key="i">
                    <td>{{ s.name }}</td>
                    <td>{{ s.label }}</td>
                    <td><span v-if="s.value === null || s.value === ''" class="cell-empty">（空）</span>{{ fmtVal(s.value) }}</td>
                    <td style="white-space:nowrap;color:#909399">{{ s.unit || '' }}</td>
                  </tr>
                </tbody>
              </table>