layer1: log namespace summary active flag

pkg/utils/namespace_manager_test.go

@@ -8,6 +8,7 @@ import (
 	"time"
 
 	"go.uber.org/zap"
+	"go.uber.org/zap/zaptest/observer"
 	corev1 "k8s.io/api/core/v1"
 	k8sfake "k8s.io/client-go/kubernetes/fake"
 	k8sCache "k8s.io/client-go/tools/cache"
@@ -570,7 +571,7 @@ func TestLogNamespaceManagerSummary(t *testing.T) {
 		TotalNamespaces: 2,
 		LiveNamespaces:  1,
 		PhaseCounts: map[NamespacePhase]int{
-			NamespacePhaseActive: 1,
+			NamespacePhaseActive:  1,
 			NamespacePhaseRemoved: 1,
 		},
 		SourceCounts: map[NamespaceSource]int{
@@ -583,6 +584,31 @@ func TestLogNamespaceManagerSummary(t *testing.T) {
 	LogNamespaceManagerSummary(logger, "namespace summary", summary)
 }
 
+func TestLogNamespaceManagerSummaryIncludesHasActiveNamespaces(t *testing.T) {
+	core, logs := observer.New(zap.InfoLevel)
+	logger := zap.New(core)
+
+	LogNamespaceManagerSummary(logger, "namespace summary", NamespaceManagerSummary{
+		LiveNamespaces: 1,
+		PhaseCounts:    map[NamespacePhase]int{},
+		SourceCounts:   map[NamespaceSource]int{},
+		Subscribers:    []string{},
+	})
+
+	entries := logs.AllUntimed()
+	if len(entries) != 1 {
+		t.Fatalf("expected one log entry, got %d", len(entries))
+	}
+	fields := entries[0].ContextMap()
+	active, ok := fields["has_active_namespaces"].(bool)
+	if !ok {
+		t.Fatalf("expected has_active_namespaces field in log context")
+	}
+	if !active {
+		t.Fatalf("expected has_active_namespaces=true in log context")
+	}
+}
+
 func TestNamespaceManagerSummaryEmptyContract(t *testing.T) {
 	manager := NewNamespaceManager()
 	summary := manager.Summary()