fix: 修正Q2方案标签并添加导出功能

修复Q2方案的标签显示不一致问题，将"Q Scheme 2"改为"Q2 Scheme"
在Q2方案页面添加导出功能组件

src/page-components/scheme/Q2Scheme.tsx

@@ -1,8 +1,10 @@
+import { isEqual, isNil } from 'lodash-es';
 import { useState } from 'react';
 import { Tab } from '../../components/Tab';
 import { SchemeContent } from '../../models';
 import { Q2SchemeStorage } from '../../q-2-scheme';
 import { isNilOrEmpty } from '../../utls';
+import { SchemeExport } from './Export';
 
 const tabOptions = [
   { title: 'Overview', id: 'overview' },
@@ -30,6 +32,7 @@ export function Q2Scheme({ scheme }: Q2SchemeProps) {
           export: isNilOrEmpty(scheme.schemeStorage?.cssVariables),
         }}
       />
+      {isEqual(activeTab, 'export') && <SchemeExport scheme={scheme} />}
     </>
   );
 }