diff --git a/docs/plans/2026-05-26-akka-hosting-alignment-plan.md.tasks.json b/docs/plans/2026-05-26-akka-hosting-alignment-plan.md.tasks.json
index 9196c7c..1dc3044 100644
--- a/docs/plans/2026-05-26-akka-hosting-alignment-plan.md.tasks.json
+++ b/docs/plans/2026-05-26-akka-hosting-alignment-plan.md.tasks.json
@@ -67,7 +67,7 @@
     {"id": 55, "subject": "Task 55: Mac dev mode + DEV-STUB drivers",                          "status": "completed", "classification": "standard",  "estMinutes": 5, "parallelizableWith": [53,54], "blockedBy": [41], "commit": "8b4de80"},
     {"id": 56, "subject": "Task 56: Delete OtOpcUa.Server + OtOpcUa.Admin projects",           "status": "completed", "classification": "high-risk", "estMinutes": 5, "parallelizableWith": [], "blockedBy": [53,54,55], "commit": "76310b8"},
     {"id": 57, "subject": "Task 57: Build & test green check",                                 "status": "completed", "classification": "trivial",   "estMinutes": 3, "parallelizableWith": [], "blockedBy": [56], "commit": "76310b8"},
-    {"id": 58, "subject": "Task 58: 2-node integration test harness",                          "status": "pending", "classification": "standard",  "estMinutes": 5, "parallelizableWith": [], "blockedBy": [57]},
+    {"id": 58, "subject": "Task 58: 2-node integration test harness",                          "status": "completed", "classification": "standard",  "estMinutes": 5, "parallelizableWith": [], "blockedBy": [57], "commit": "d6fac2d", "deviation": "Also consolidated to a single Akka.Hosting ActorSystem — Program.cs ran two competing ActorSystems (custom AkkaHostedService + Akka.Hosting AddAkka). Cluster singletons landed on the bare one. Fixed in this commit; AkkaHostedService.cs deleted. docker-compose.yml (SQL+OpenLDAP for real local runs) deferred — harness uses EF in-memory."},
     {"id": 59, "subject": "Task 59: Deploy + failover integration tests",                      "status": "pending", "classification": "standard",  "estMinutes": 5, "parallelizableWith": [60], "blockedBy": [58]},
     {"id": 60, "subject": "Task 60: OPC UA dual-endpoint + ServiceLevel tests",                "status": "pending", "classification": "standard",  "estMinutes": 5, "parallelizableWith": [59], "blockedBy": [58]},
     {"id": 61, "subject": "Task 61: E2E test infrastructure + GitHub Actions CI",              "status": "pending", "classification": "standard",  "estMinutes": 5, "parallelizableWith": [], "blockedBy": [59,60]},
@@ -94,6 +94,7 @@
     {"id": "F17", "subject": "Follow-up: FleetDiagnosticsClient real Akka ActorSelection round-trip (GetDiagnosticsRequest)", "status": "pending", "classification": "standard", "estMinutes": 30, "parallelizableWith": [], "blockedBy": [], "origin": "Self-review of Task 51 — client returns an empty snapshot stub. Add GetDiagnosticsRequest contract + DriverHostActor handler + real Ask/Reply."},
     {"id": "F18", "subject": "Follow-up: Thread HttpContext.User.Identity.Name into Deployments page (createdBy)", "status": "completed", "classification": "small", "estMinutes": 5, "parallelizableWith": [], "blockedBy": [], "commit": "b266f63", "origin": "Self-review of Task 52 — Deployments.razor hardcodes createdBy=\"(current user)\"; needs @inject AuthenticationStateProvider."},
     {"id": "F19", "subject": "Follow-up: RuntimeStartup extension for driver-role node-actor spawn", "status": "completed", "classification": "standard", "estMinutes": 20, "parallelizableWith": [], "blockedBy": [], "commit": "09d6676", "origin": "Self-review of Task 53 — only admin-role singletons are wired via WithOtOpcUaControlPlaneSingletons. Driver-role nodes need a parallel WithOtOpcUaRuntimeActors that spawns DriverHostActor."},
-    {"id": "F20", "subject": "Follow-up: Wire DriverInstanceActor.ShouldStub() into DriverHostActor child spawn", "status": "pending", "classification": "small", "estMinutes": 10, "parallelizableWith": ["F7"], "blockedBy": [], "origin": "Self-review of Task 55 — ShouldStub helper exists but nothing calls it. Folds into F7 when DriverHostActor learns to spawn DriverInstanceActor children."}
+    {"id": "F20", "subject": "Follow-up: Wire DriverInstanceActor.ShouldStub() into DriverHostActor child spawn", "status": "pending", "classification": "small", "estMinutes": 10, "parallelizableWith": ["F7"], "blockedBy": [], "origin": "Self-review of Task 55 — ShouldStub helper exists but nothing calls it. Folds into F7 when DriverHostActor learns to spawn DriverInstanceActor children."},
+    {"id": "F21", "subject": "Follow-up: docker-compose.yml for Host.IntegrationTests (real SQL Server + OpenLDAP)", "status": "pending", "classification": "standard", "estMinutes": 30, "parallelizableWith": [], "blockedBy": [], "origin": "Deviation from Task 58 — TwoNodeClusterHarness uses EF InMemoryDatabase + StubLdapAuthService. For Mac-friendly local runs against real SQL constraints + LDAP, add tests/Server/ZB.MOM.WW.OtOpcUa.Host.IntegrationTests/docker-compose.yml (SQL Server + OpenLDAP), wire EF SqlServer provider behind an env var (OTOPCUA_HARNESS_USE_SQL=1), and add a test trait so CI can run both modes."}
   ]
 }