fix(lns): make lifecycle hooks nil-safe

lns.go

@@ -123,6 +123,10 @@ var (
 	} = (*Service)(nil)
 )
 
+func okResult() core.Result {
+	return core.Result{OK: true}
+}
+
 // serviceOptions holds configuration for the LNS service.
 type serviceOptions struct{}
 
@@ -510,13 +514,13 @@ func (s *Service) GetDecodeResource(raw []byte) (*Resource, error) {
 // OnStartup satisfies core.Startable so LNS participates in Core lifecycle
 // discovery without requiring any explicit setup.
 func (s *Service) OnStartup(context.Context) core.Result {
-	return core.Result{OK: true}
+	return okResult()
 }
 
 // OnShutdown satisfies core.Stoppable so LNS participates in Core lifecycle
 // discovery without requiring any explicit teardown.
 func (s *Service) OnShutdown(context.Context) core.Result {
-	return core.Result{OK: true}
+	return okResult()
 }
 
 // HandleIPCEvents satisfies Core's IPC handler discovery.
@@ -524,7 +528,7 @@ func (s *Service) OnShutdown(context.Context) core.Result {
 //	core.New(core.WithService(lns.Register))
 //	// LNS registers a no-op IPC handler so it can join the bus cleanly.
 func (s *Service) HandleIPCEvents(*core.Core, core.Message) core.Result {
-	return core.Result{OK: true}
+	return okResult()
 }
 
 func canonicalizeName(name any) (string, bool) {

lns_test.go

@@ -25,6 +25,16 @@ func TestServiceLifecycleHooks(t *testing.T) {
 	if got := svc.OnShutdown(nil); !got.OK {
 		t.Fatalf("OnShutdown returned %#v, want OK", got)
 	}
+
+	var nilSvc *Service
+
+	if got := nilSvc.OnStartup(nil); !got.OK {
+		t.Fatalf("nil OnStartup returned %#v, want OK", got)
+	}
+
+	if got := nilSvc.OnShutdown(nil); !got.OK {
+		t.Fatalf("nil OnShutdown returned %#v, want OK", got)
+	}
 }
 
 func TestServiceHandleIPCEvents(t *testing.T) {
@@ -33,6 +43,12 @@ func TestServiceHandleIPCEvents(t *testing.T) {
 	if got := svc.HandleIPCEvents(nil, nil); !got.OK {
 		t.Fatalf("HandleIPCEvents returned %#v, want OK", got)
 	}
+
+	var nilSvc *Service
+
+	if got := nilSvc.HandleIPCEvents(nil, nil); !got.OK {
+		t.Fatalf("nil HandleIPCEvents returned %#v, want OK", got)
+	}
 }
 
 func TestServiceResolve(t *testing.T) {