feat(audit): start purge + reconciliation singletons; production ISiteEnumerator

tests/ZB.MOM.WW.ScadaBridge.Host.Tests/ActorPathTests.cs

@@ -117,6 +117,22 @@ public class CentralActorPathTests : IAsyncLifetime
     public async Task CentralActors_NotificationOutboxProxy_Exists()
         => await AssertActorExists("/user/notification-outbox-proxy");
 
+    [Fact]
+    public async Task CentralActors_AuditLogPurgeSingleton_Exists()
+        => await AssertActorExists("/user/audit-log-purge-singleton");
+
+    [Fact]
+    public async Task CentralActors_AuditLogPurgeProxy_Exists()
+        => await AssertActorExists("/user/audit-log-purge-proxy");
+
+    [Fact]
+    public async Task CentralActors_SiteAuditReconciliationSingleton_Exists()
+        => await AssertActorExists("/user/site-audit-reconciliation-singleton");
+
+    [Fact]
+    public async Task CentralActors_SiteAuditReconciliationProxy_Exists()
+        => await AssertActorExists("/user/site-audit-reconciliation-proxy");
+
     private async Task AssertActorExists(string path)
     {
         Assert.NotNull(_actorSystem);