feat: add kueue labels lint checks for all workload types

Extend the kueue queue-name label validation to InferenceService,
LLMInferenceService, RayCluster, RayJob, and PyTorchJob workloads.
Checks verify that workloads with the kueue.x-k8s.io/queue-name label
are in kueue-enabled namespaces, and are only active when both the
owning component and Kueue are enabled on the DSC.

Also introduces shared validation logic in workloads/kueue/support.go,
AddCondition/SetConditions helpers on DiagnosticResult, and
GetLabel/HasLabel utilities in pkg/util/kube.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: lburgazzoli

pkg/constants/constants.go

@@ -11,7 +11,21 @@ const (
 const (
 	ComponentDashboard        = "dashboard"
 	ComponentKServe           = "kserve"
+	ComponentRay              = "ray"
 	ComponentTrainingOperator = "trainingoperator"
+	ComponentWorkbenches      = "workbenches"
+)
+
+// Component names for Kueue integration.
+const (
+	ComponentKueue = "kueue"
+)
+
+// Kueue-specific label keys used across workload check packages.
+const (
+	LabelKueueManaged          = "kueue-managed"
+	LabelKueueOpenshiftManaged = "kueue.openshift.io/managed"
+	LabelKueueQueueName        = "kueue.x-k8s.io/queue-name"
 )
 
 // Workload annotations used across multiple check packages.

pkg/lint/checks/workloads/kserve/kueue_labels_isvc.go

@@ -0,0 +1,21 @@
+package kserve
+
+import (
+	"github.com/opendatahub-io/odh-cli/pkg/constants"
+	"github.com/opendatahub-io/odh-cli/pkg/lint/checks/workloads/kueue"
+	"github.com/opendatahub-io/odh-cli/pkg/resources"
+)
+
+const ConditionTypeISVCKueueLabels = "ISVCKueueLabels"
+
+func NewKueueLabelsISVCCheck() *kueue.KueueLabelCheck {
+	return kueue.NewCheck(kueue.CheckConfig{
+		Kind:          constants.ComponentKServe,
+		Component:     constants.ComponentKServe,
+		Resource:      resources.InferenceService,
+		ConditionType: ConditionTypeISVCKueueLabels,
+		KindLabel:     "InferenceService",
+		CheckID:       "workloads.kserve.kueue-labels-isvc",
+		CheckName:     "Workloads :: KServe :: InferenceService Kueue Labels",
+	})
+}