fix: show group plugin stats in detail dialog

admin/dashboard/templates/groups.html

@@ -75,7 +75,7 @@
 
                 <div class="detail-section">
                     <div class="section-title">插件调用 Top</div>
-                    <el-table :data="detailData.plugin_summary.top_plugins" size="mini">
+                    <el-table :data="detailData.plugin_stats || []" size="mini">
                         <el-table-column prop="plugin_name" label="插件"></el-table-column>
                         <el-table-column prop="command" label="命令" min-width="120"></el-table-column>
                         <el-table-column prop="total_calls" label="调用" width="90"></el-table-column>