diff --git a/modules/mesh-conditions/cmd/mesh-conditions/keeper.go b/modules/mesh-conditions/cmd/mesh-conditions/keeper.go
index 178234acb..006aac7aa 100644
--- a/modules/mesh-conditions/cmd/mesh-conditions/keeper.go
+++ b/modules/mesh-conditions/cmd/mesh-conditions/keeper.go
@@ -20,6 +20,7 @@ import (
 	assignerclient "git.novox.be/novox/mesh-contracts/go/clients/meshmoduleassignerclient"
 	mesh "git.novox.be/novox/mesh-contracts/go/seats/meshmoduleassigner"
 	stdio "git.novox.be/novox/mesh-sdk/go"
+	"git.novox.be/novox/mesh-sdk/go/buscompose"
 	"git.novox.be/novox/mesh-sdk/go/motion"
 
 	cc "git.novox.be/novox/mesh-contracts/health-and-repair/go/clients/meshconditionsclient"
@@ -65,7 +66,10 @@ var Observers = []string{watchmanModule, selfCheckModule, healersModule, assigne
 	// readers' of the indexer's and the assigner's state (the registry milestone's join).
 	builder, indexer, "mesh-delivery-checker", "mesh-delivery-teller", "mesh-delivery-view", enrolment,
 	// The tool runner's and claude-code's own first views (views.UnansweredFinding in their findings, ADR 0615 §6).
-	"node-tools", "claude-code"}
+	"node-tools", "claude-code",
+	// The node-engine's: a node that has read no seat list five minutes after its start, seat-list-unread (ADR 0636 §1;
+	// issue 1966: written on ace and raised by nobody).
+	buscompose.EngineModule}
 
 // The other states it reads, as `<module>.<name>`.
 const (
diff --git a/modules/mesh-conditions/cmd/mesh-conditions/keeper_test.go b/modules/mesh-conditions/cmd/mesh-conditions/keeper_test.go
index 1b70ecd83..80b893b05 100644
--- a/modules/mesh-conditions/cmd/mesh-conditions/keeper_test.go
+++ b/modules/mesh-conditions/cmd/mesh-conditions/keeper_test.go
@@ -334,8 +334,9 @@ func TestEveryControllerKindHasItsHome(t *testing.T) {
 	// Each module that writes a reader's unanswered first view (ADR 0615 §6), or that a delivery part's consumer stopped
 	// hearing, is read: the delivery parts and the tool runner by name (other repositories), and every catalogue module
 	// whose code writes a views finding, found in the catalogue's tree, so a new writer cannot go unobserved.
+	// And the node-engine, whose node writes seat-list-unread when it has read no seat list (ADR 0636 §1, issue 1966).
 	readers := []string{watchman, "mesh-delivery-teller", enrolment, builder, "mesh-delivery-checker", "mesh-delivery-view",
-		indexer, assignerModule, configModule, vaultModule, gitea, "node-tools"}
+		indexer, assignerModule, configModule, vaultModule, gitea, "node-tools", "mesh-host"}
 	readers = append(readers, viewFindingWriters(t, "../../..")...)
 	for _, reader := range readers {
 		if !slices.Contains(Observers, reader) {
diff --git a/modules/mesh-conditions/module.json b/modules/mesh-conditions/module.json
index af7ed4ac5..f6803f865 100644
--- a/modules/mesh-conditions/module.json
+++ b/modules/mesh-conditions/module.json
@@ -34,6 +34,7 @@
     "mesh-enrolment.findings",
     "node-tools.findings",
     "claude-code.findings",
+    "mesh-host.findings",
     "mesh-healers.attempts",
     "node-engine.have"
   ],