Use WorkloadKindMCPRemoteProxy constant instead of string literal

Replace hardcoded "MCPRemoteProxy" strings with the shared constant
from PR #4520 for consistency with all other controllers.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: ChrisJBurns

cmd/thv-operator/controllers/mcpremoteproxy_controller.go

@@ -820,7 +820,7 @@ func (r *MCPRemoteProxyReconciler) updateOIDCConfigReferencingWorkloads(
 	proxyName string,
 ) error {
 	ref := mcpv1alpha1.WorkloadReference{
-		Kind: "MCPRemoteProxy",
+		Kind: mcpv1alpha1.WorkloadKindMCPRemoteProxy,
 		Name: proxyName,
 	}
 

cmd/thv-operator/test-integration/mcp-oidc-config/mcpoidcconfig_mcpremoteproxy_integration_test.go

@@ -168,7 +168,7 @@ var _ = Describe("MCPOIDCConfig and MCPRemoteProxy Cross-Resource Integration Te
 				if err != nil {
 					return false
 				}
-				expectedRef := mcpv1alpha1.WorkloadReference{Kind: "MCPRemoteProxy", Name: proxyName}
+				expectedRef := mcpv1alpha1.WorkloadReference{Kind: mcpv1alpha1.WorkloadKindMCPRemoteProxy, Name: proxyName}
 				for _, ref := range updated.Status.ReferencingWorkloads {
 					if ref == expectedRef {
 						return true
@@ -522,7 +522,7 @@ var _ = Describe("MCPOIDCConfig and MCPRemoteProxy Cross-Resource Integration Te
 				if err != nil {
 					return false
 				}
-				expectedRef := mcpv1alpha1.WorkloadReference{Kind: "MCPRemoteProxy", Name: proxyName}
+				expectedRef := mcpv1alpha1.WorkloadReference{Kind: mcpv1alpha1.WorkloadKindMCPRemoteProxy, Name: proxyName}
 				for _, ref := range updated.Status.ReferencingWorkloads {
 					if ref == expectedRef {
 						return true
@@ -657,7 +657,7 @@ var _ = Describe("MCPOIDCConfig and MCPRemoteProxy Cross-Resource Integration Te
 				if err != nil {
 					return false
 				}
-				expectedRef := mcpv1alpha1.WorkloadReference{Kind: "MCPRemoteProxy", Name: proxyName}
+				expectedRef := mcpv1alpha1.WorkloadReference{Kind: mcpv1alpha1.WorkloadKindMCPRemoteProxy, Name: proxyName}
 				for _, ref := range updated.Status.ReferencingWorkloads {
 					if ref == expectedRef {
 						return true
@@ -707,7 +707,7 @@ var _ = Describe("MCPOIDCConfig and MCPRemoteProxy Cross-Resource Integration Te
 				if err != nil {
 					return false
 				}
-				expectedRef := mcpv1alpha1.WorkloadReference{Kind: "MCPRemoteProxy", Name: proxyName}
+				expectedRef := mcpv1alpha1.WorkloadReference{Kind: mcpv1alpha1.WorkloadKindMCPRemoteProxy, Name: proxyName}
 				for _, ref := range cfg.Status.ReferencingWorkloads {
 					if ref == expectedRef {
 						return false
@@ -801,7 +801,7 @@ var _ = Describe("MCPOIDCConfig and MCPRemoteProxy Cross-Resource Integration Te
 				if err != nil {
 					return false
 				}
-				expectedRef := mcpv1alpha1.WorkloadReference{Kind: "MCPRemoteProxy", Name: proxyName}
+				expectedRef := mcpv1alpha1.WorkloadReference{Kind: mcpv1alpha1.WorkloadKindMCPRemoteProxy, Name: proxyName}
 				for _, ref := range updated.Status.ReferencingWorkloads {
 					if ref == expectedRef {
 						return true
@@ -830,7 +830,7 @@ var _ = Describe("MCPOIDCConfig and MCPRemoteProxy Cross-Resource Integration Te
 				if err != nil {
 					return false
 				}
-				expectedRef := mcpv1alpha1.WorkloadReference{Kind: "MCPRemoteProxy", Name: proxyName}
+				expectedRef := mcpv1alpha1.WorkloadReference{Kind: mcpv1alpha1.WorkloadKindMCPRemoteProxy, Name: proxyName}
 				for _, ref := range updated.Status.ReferencingWorkloads {
 					if ref == expectedRef {
 						return false