fix: increase rules list viewport height

app/routes/rulesTest.list.tsx

@@ -422,13 +422,13 @@ export default function RulesTestList() {
           />
         </FilterPanel>
 
-        <Card className="ant-card">
+        <Card className="ant-card rules-test-table-card">
           <Table
             className="rules-test-table rules-table"
             columns={columns}
             dataSource={rows}
             rowKey="rowId"
-            scroll={{ y: 700 }}
+            scroll={{ y: 'calc(100vh - 340px)' }}
             emptyText={<div className="empty-state">暂无规则。当前类型的规则列表流程已保留，可进入配置页查看空 YAML 模板。</div>}
           />
           {totalCount > 0 && (