feat: 合同导出弹窗新增导出行配置（合计行/大写金额行/备注行可选）

- 新增 rowConfigs 配置，支持控制合计行、大写金额行、备注行显隐
- 新增全选/半选逻辑，与列配置交互风格一致
- 导出 HTML 模板根据行配置动态渲染

klp-ui/src/views/crm/contract/components/ContractExportDialog.vue

@@ -10,7 +10,12 @@
           <el-checkbox v-model="col.checked" @change="onColumnChange">{{ col.label }}</el-checkbox>
         </div>
         <el-divider />
-        <div style="font-size: 12px; color: #909399;">勾选的列将显示在导出的产品表中</div>
+        <div style="font-weight: bold; margin-bottom: 10px; font-size: 14px;">附加行配置</div>
+        <el-checkbox v-model="selectAllRows" :indeterminate="rowIndeterminate" @change="handleSelectAllRows"
+          style="margin-bottom: 8px;">全选</el-checkbox>
+        <div v-for="rowCfg in rowConfigs" :key="rowCfg.key" style="margin-bottom: 6px;">
+          <el-checkbox v-model="rowCfg.checked" @change="onRowChange">{{ rowCfg.label }}</el-checkbox>
+        </div>
       </div>
       <div style="flex: 1; border: 1px solid #e4e7ed; border-radius: 4px; overflow: hidden; background: #f0f0f0;">
         <iframe ref="previewFrame" style="width: 100%; height: 100%; border: none; background: #fff;"></iframe>
@@ -63,6 +68,13 @@ export default {
         { key: 'taxAmount', label: '税额（元）', checked: true },
         { key: 'remark', label: '备注', checked: true },
       ],
+      selectAllRows: true,
+      rowIndeterminate: false,
+      rowConfigs: [
+        { key: 'totalRow', label: '合计行', checked: true },
+        { key: 'amountWordsRow', label: '大写金额行', checked: true },
+        { key: 'remarkRow', label: '备注行', checked: true },
+      ],
     };
   },
   computed: {
@@ -90,9 +102,22 @@ export default {
       this.columnIndeterminate = checkedCount > 0 && checkedCount < this.columnConfigs.length;
       this.generatePreviewHtml();
     },
+    handleSelectAllRows(val) {
+      this.rowConfigs.forEach(row => { row.checked = val; });
+      this.rowIndeterminate = false;
+      this.generatePreviewHtml();
+    },
+    onRowChange() {
+      const checkedCount = this.rowConfigs.filter(r => r.checked).length;
+      this.selectAllRows = checkedCount === this.rowConfigs.length;
+      this.rowIndeterminate = checkedCount > 0 && checkedCount < this.rowConfigs.length;
+      this.generatePreviewHtml();
+    },
     buildProductTableHtml(productData, products) {
       const activeCols = this.columnConfigs.filter(c => c.checked);
+      const activeRows = this.rowConfigs.filter(r => r.checked);
       const hasCol = (key) => activeCols.some(c => c.key === key);
+      const hasRow = (key) => activeRows.some(r => r.key === key);
 
       let headerCells = '<th style="border:1px solid #000;padding:4px 4px;font-weight:bold;width:30px;">序号</th>';
       if (hasCol('spec')) headerCells += '<th style="border:1px solid #000;padding:4px 4px;font-weight:bold;width:80px;">规格(mm)</th>';
@@ -155,11 +180,9 @@ export default {
           </tr>
           <tr>${headerCells}</tr>
           ${bodyRows}
-          <tr>${totalCells}</tr>
-          <tr>
-            <td colspan="${colCount}" style="border:1px solid #000;padding:4px 6px;font-weight:bold;text-align:left;">合计人民币（大写）：${totalAmountInWords}</td>
-          </tr>
-          ${productData.remark ? `<tr><td colspan="${colCount}" style="border:1px solid #000;padding:4px 6px;text-align:left;">备注：${productData.remark}</td></tr>` : ''}
+          ${hasRow('totalRow') ? `<tr>${totalCells}</tr>` : ''}
+          ${hasRow('amountWordsRow') ? `<tr><td colspan="${colCount}" style="border:1px solid #000;padding:4px 6px;font-weight:bold;text-align:left;">合计人民币（大写）：${totalAmountInWords}</td></tr>` : ''}
+          ${hasRow('remarkRow') && productData.remark ? `<tr><td colspan="${colCount}" style="border:1px solid #000;padding:4px 6px;text-align:left;">备注：${productData.remark}</td></tr>` : ''}
         </table>`;
       return html;
     },