diff --git a/docs/release-control/v6/internal/subsystems/performance-and-scalability.md b/docs/release-control/v6/internal/subsystems/performance-and-scalability.md
index 5ef7fff2f..a5feb5852 100644
--- a/docs/release-control/v6/internal/subsystems/performance-and-scalability.md
+++ b/docs/release-control/v6/internal/subsystems/performance-and-scalability.md
@@ -144,6 +144,10 @@ share the canonical cluster-name helpers in the shared agent-resource layer,
 so route labels, pod grouping, and cluster-name fetch keys keep using the
 same source of truth instead of rebuilding the `clusterName`/`context`/
 `clusterId` prefix locally.
+The shared node adapter also uses that same cluster-name helper for the
+infrastructure summary surface, so Proxmox node projections stay aligned with
+the same canonical cluster label instead of carrying a raw adapter-local
+cluster string.
 The drawer's Kubernetes namespace/deployment tabs use the canonical
 cluster-name helper for fetch keys, so the visible navigation label stays
 separate from the backend cluster lookup contract.
diff --git a/docs/release-control/v6/internal/subsystems/unified-resources.md b/docs/release-control/v6/internal/subsystems/unified-resources.md
index d00530024..5981ab26c 100644
--- a/docs/release-control/v6/internal/subsystems/unified-resources.md
+++ b/docs/release-control/v6/internal/subsystems/unified-resources.md
@@ -176,6 +176,10 @@ The same shared agent-resource module now also owns the canonical cluster-name
 helpers, so Kubernetes context prefixes, Proxmox cluster labels, and
 cluster-name fetch keys stay aligned instead of each surface rebuilding its
 own pod, namespace, and VM routing fallbacks.
+The shared node-state adapter also routes Proxmox cluster labels through that
+same helper, so infrastructure summary projections keep the same canonical
+cluster name as the rest of the unified resource model instead of rewriting
+the label locally.
 The canonical unified-resource change and relationship presenters now also
 share the same elapsed-time and "ago" wording utilities, so `observed`,
 `last seen`, and `ago` fragments stay consistent without each formatter
diff --git a/frontend-modern/src/utils/__tests__/resourceStateAdapters.test.ts b/frontend-modern/src/utils/__tests__/resourceStateAdapters.test.ts
index e683070e8..57fd36d4f 100644
--- a/frontend-modern/src/utils/__tests__/resourceStateAdapters.test.ts
+++ b/frontend-modern/src/utils/__tests__/resourceStateAdapters.test.ts
@@ -88,6 +88,20 @@ describe('resourceStateAdapters nodeFromResource', () => {
     expect(node?.displayName).toBe('Tower');
     expect(node?.host).toBe('tower.local');
     expect(node?.instance).toBe('pve-canonical');
+    expect(node?.clusterName).toBeUndefined();
+  });
+
+  it('projects the canonical cluster name through the shared helper', () => {
+    const node = nodeFromResource(
+      createNodeResource({
+        proxmox: {
+          nodeName: 'pve-node-1',
+          clusterName: 'cluster-a',
+        },
+      }),
+    );
+
+    expect(node?.clusterName).toBe('cluster-a');
   });
 
   it('maps PBS display and host identity through shared resource helpers', () => {
diff --git a/frontend-modern/src/utils/resourceStateAdapters.ts b/frontend-modern/src/utils/resourceStateAdapters.ts
index 0eaaac197..25b9c56da 100644
--- a/frontend-modern/src/utils/resourceStateAdapters.ts
+++ b/frontend-modern/src/utils/resourceStateAdapters.ts
@@ -23,6 +23,7 @@ import type {
 import type { Resource } from '@/types/resource';
 import { getActionableAgentIdFromResource } from '@/utils/agentResources';
 import {
+  getPreferredResourceClusterName,
   getPreferredResourceDisplayName,
   getPreferredResourceHostname,
 } from '@/utils/resourceIdentity';
@@ -232,7 +233,7 @@ export const nodeFromResource = (resource: Resource): Node | null => {
     lastSeen: toISOTime(undefined, resource.lastSeen),
     connectionHealth: asString(proxmox?.connectionHealth) || resource.status || 'unknown',
     isClusterMember: asBoolean(proxmox?.isClusterMember),
-    clusterName: asString(proxmox?.clusterName),
+    clusterName: getPreferredResourceClusterName(resource),
     linkedAgentId,
   };
 };