feat(invitation): 新增返利统计汇总与时间筛选

backend/internal/modules/invitation/service.go

@@ -107,3 +107,10 @@ func (s *Service) ListAdminRebateLedgers(ctx context.Context, query AdminRebateL
 	}
 	return s.repo.ListAdminRebateLedgers(ctx, query)
 }
+
+func (s *Service) AdminRebateSummary(ctx context.Context, query AdminRebateLedgerQuery) (*AdminRebateSummaryDTO, error) {
+	if s.repo == nil {
+		return nil, ErrDependencyUnavailable
+	}
+	return s.repo.AdminRebateSummary(ctx, query)
+}