fix(aihr): clarify SOP coverage metric semantics

frontend/src/views/index.vue

@@ -182,7 +182,7 @@ const emptyDashboard: DashboardOverview = {
   pipelineSummary: { todayNew: '0 条', pending: '0 条', completed: '0 条' },
   metrics: [
     { label: '端到端路径', value: '0 条', target: 'L0 目标 >= 1 条', type: 'danger' },
-    { label: 'SOP已入库', value: '0 份', target: 'B1 目标 >= 5 流程', type: 'danger' },
+    { label: 'SOP文档', value: '0 份', target: '核心流程覆盖待内容确认', type: 'warning' },
     { label: '训练记录', value: '0 条', target: '育：至少 1 类场景', type: 'danger' },
     { label: '试点人数', value: '0 人', target: 'D1 目标 >= 20 人', type: 'danger' }
   ]