layer1: add namespace bootstrap dispatch step 26

pkg/utils/namespace_manager_test.go

@@ -179,6 +179,50 @@ func TestNamespaceManagerBootstrap(t *testing.T) {
 	}
 }
 
+func TestNamespaceManagerBootstrapAndDispatch(t *testing.T) {
+	manager := NewNamespaceManager()
+	router := &testNamespaceSubscriber{name: "router"}
+	builder := &testNamespaceSubscriber{name: "buildermgr"}
+	manager.Subscribe(router)
+	manager.Subscribe(builder)
+
+	records, err := manager.BootstrapAndDispatch(context.Background(), []string{"tenant-b", "tenant-a"}, NamespaceSourceBackfill, time.Now().UTC())
+	if err != nil {
+		t.Fatalf("expected bootstrap and dispatch success: %v", err)
+	}
+	if len(records) != 2 {
+		t.Fatalf("expected 2 records, got %d", len(records))
+	}
+	if router.addCalls != 2 || builder.addCalls != 2 {
+		t.Fatalf("expected both subscribers to be called for each namespace")
+	}
+	if records[0].Phase != NamespacePhaseActive || records[1].Phase != NamespacePhaseActive {
+		t.Fatalf("expected active records after bootstrap dispatch")
+	}
+}
+
+func TestNamespaceManagerBootstrapAndDispatchFailure(t *testing.T) {
+	manager := NewNamespaceManager()
+	router := &testNamespaceSubscriber{name: "router", addErr: errors.New("router failed")}
+	builder := &testNamespaceSubscriber{name: "buildermgr"}
+	manager.Subscribe(router)
+	manager.Subscribe(builder)
+
+	records, err := manager.BootstrapAndDispatch(context.Background(), []string{"tenant-a"}, NamespaceSourceBackfill, time.Now().UTC())
+	if err == nil {
+		t.Fatalf("expected bootstrap dispatch failure")
+	}
+	if len(records) != 1 {
+		t.Fatalf("expected single record result")
+	}
+	if records[0].Phase != NamespacePhaseFailed {
+		t.Fatalf("expected failed phase after subscriber error, got %s", records[0].Phase)
+	}
+	if records[0].RegisteredParts["router"].LastError != "router failed" {
+		t.Fatalf("expected router failure to be stored")
+	}
+}
+
 func TestNamespaceManagerPartStateHelpers(t *testing.T) {
 	manager := NewNamespaceManager()
 	manager.Upsert(NamespaceEvent{Type: NamespaceEventAdd, Name: "tenant-a", Source: NamespaceSourceWatcher})