feat: integrate OA activation workflows and business migration

internal/biz/business/dashboard.go

@@ -13,6 +13,7 @@ type DashboardMetrics struct {
 	Pay                                                      string
 }
 type DashboardData struct {
+	EventsIncomplete  bool
 	Current, Previous DashboardMetrics
 	Available         bool
 	EventsAvailable   bool
@@ -84,8 +85,7 @@ func (uc *DashboardUsecase) Overview(ctx context.Context, sources []string, peri
 		}
 		r.Cards[card.key] = value
 	}
-	// The imported SDK channel table has only current state; historical event
-	// counts must stay unavailable until a timestamped event source is connected.
+	// OA 在渠道更新事务中记录事件；按事件发生时间统计，不读取当前锁定状态。
 	for _, card := range []struct {
 		key               string
 		current, previous int64
@@ -93,6 +93,9 @@ func (uc *DashboardUsecase) Overview(ctx context.Context, sources []string, peri
 		label := "较上一同期"
 		if !data.EventsAvailable {
 			label = "事件数据未接入"
+			if data.EventsIncomplete {
+				label = "所选区间事件历史不完整"
+			}
 		}
 		value, err := workbenchCard(num(card.current), num(card.previous), label, data.Available && data.EventsAvailable)
 		if err != nil {