diff --git a/docs/release-control/v6/internal/subsystems/ai-runtime.md b/docs/release-control/v6/internal/subsystems/ai-runtime.md
index bf2e74812..5a4408b2a 100644
--- a/docs/release-control/v6/internal/subsystems/ai-runtime.md
+++ b/docs/release-control/v6/internal/subsystems/ai-runtime.md
@@ -141,6 +141,9 @@ Structured mention resolution also uses the shared AI tools discovery
 canonicalization helpers now, so chat prefetch and discovery responses agree
 on resource-type and target-ID formatting instead of maintaining chat-local
 copies.
+The chat mention picker now also carries the canonical preferred resource
+label as `label` through the structured mention payload, so mention search,
+selection, and submission do not depend on a raw `displayName` field fork.
 The same governed-context rule also applies to the main unified AI resource
 overview: infrastructure, workload, alert-label, and top-consumer summaries
 must not leak raw resource names, cluster labels, IP addresses, or unresolved
diff --git a/frontend-modern/src/components/AI/Chat/MentionAutocomplete.tsx b/frontend-modern/src/components/AI/Chat/MentionAutocomplete.tsx
index e20a75f72..c764dc3f4 100644
--- a/frontend-modern/src/components/AI/Chat/MentionAutocomplete.tsx
+++ b/frontend-modern/src/components/AI/Chat/MentionAutocomplete.tsx
@@ -4,7 +4,7 @@ import { getSimpleStatusIndicator } from '@/utils/status';
 
 export interface MentionResource {
   id: string;
-  displayName: string;
+  label: string;
   type: 'vm' | 'system-container' | 'app-container' | 'agent';
   status?: string;
   node?: string;
@@ -28,7 +28,7 @@ export function MentionAutocomplete(props: MentionAutocompleteProps) {
     if (!q) return props.resources.slice(0, 10); // Show first 10 if no query
 
     return props.resources
-      .filter((r) => r.displayName.toLowerCase().includes(q))
+      .filter((r) => r.label.toLowerCase().includes(q))
       .slice(0, 10); // Limit to 10 results
   };
 
@@ -155,7 +155,7 @@ export function MentionAutocomplete(props: MentionAutocompleteProps) {
                 <span class="text-muted">{getTypeIcon(resource.type)}</span>
                 <div class="flex-1 min-w-0">
                   <div class="flex items-center gap-2">
-                    <span class="font-medium text-base-content truncate">{resource.displayName}</span>
+                    <span class="font-medium text-base-content truncate">{resource.label}</span>
                     <Show when={resource.status}>
                       <StatusDot
                         variant={getSimpleStatusIndicator(resource.status).variant}
diff --git a/frontend-modern/src/components/AI/Chat/__tests__/AIChat.test.tsx b/frontend-modern/src/components/AI/Chat/__tests__/AIChat.test.tsx
index 7014a95fb..13fe83bab 100644
--- a/frontend-modern/src/components/AI/Chat/__tests__/AIChat.test.tsx
+++ b/frontend-modern/src/components/AI/Chat/__tests__/AIChat.test.tsx
@@ -127,15 +127,15 @@ vi.mock('../MentionAutocomplete', () => ({
   MentionAutocomplete: (props: {
     visible: boolean;
     query: string;
-    resources: Array<{ id: string; displayName: string }>;
-    onSelect: (resource: { id: string; displayName: string }) => void;
+    resources: Array<{ id: string; label: string }>;
+    onSelect: (resource: { id: string; label: string }) => void;
   }) => (
     <div
       data-testid="mention-autocomplete"
       data-visible={String(props.visible)}
       data-query={props.query}
       data-resource-count={String(props.resources.length)}
-      data-resource-labels={props.resources.map((resource) => resource.displayName).join('|')}
+      data-resource-labels={props.resources.map((resource) => resource.label).join('|')}
     >
       <button
         type="button"
@@ -528,7 +528,7 @@ describe('AIChat', () => {
         {
           id: 'agent-1',
           name: 'secret-node-1',
-          displayName: 'redacted by policy',
+          label: 'redacted by policy',
           type: 'agent' as const,
           status: 'online',
           policy: governedPolicy,
@@ -537,7 +537,7 @@ describe('AIChat', () => {
         {
           id: 'agent-2',
           name: 'secret-node-2',
-          displayName: 'redacted by policy',
+          label: 'redacted by policy',
           type: 'agent' as const,
           status: 'online',
           policy: governedPolicy,
@@ -571,7 +571,7 @@ describe('AIChat', () => {
         {
           id: 'agent-1',
           name: 'secret-node-1',
-          displayName: 'redacted by policy',
+          label: 'redacted by policy',
           type: 'agent' as const,
           status: 'online',
           policy: governedPolicy,
diff --git a/frontend-modern/src/components/AI/Chat/__tests__/MentionAutocomplete.test.tsx b/frontend-modern/src/components/AI/Chat/__tests__/MentionAutocomplete.test.tsx
index 91caea6e9..014c09033 100644
--- a/frontend-modern/src/components/AI/Chat/__tests__/MentionAutocomplete.test.tsx
+++ b/frontend-modern/src/components/AI/Chat/__tests__/MentionAutocomplete.test.tsx
@@ -8,7 +8,7 @@ afterEach(cleanup);
 function makeResource(overrides?: Partial<MentionResource>): MentionResource {
   return {
     id: 'vm-100',
-    displayName: 'web-server',
+    label: 'web-server',
     type: 'vm',
     status: 'running',
     node: 'pve1',
@@ -19,29 +19,29 @@ function makeResource(overrides?: Partial<MentionResource>): MentionResource {
 const defaultResources: MentionResource[] = [
   makeResource({
     id: 'vm-100',
-    displayName: 'web-server',
+    label: 'web-server',
     type: 'vm',
     status: 'running',
     node: 'pve1',
   }),
   makeResource({
     id: 'ct-200',
-    displayName: 'db-container',
+    label: 'db-container',
     type: 'system-container',
     status: 'running',
     node: 'pve2',
   }),
-  makeResource({ id: 'node-1', displayName: 'pve1', type: 'agent', status: 'running' }),
+  makeResource({ id: 'node-1', label: 'pve1', type: 'agent', status: 'running' }),
   makeResource({
     id: 'docker-1',
-    displayName: 'nginx-proxy',
+    label: 'nginx-proxy',
     type: 'app-container',
     status: 'running',
     node: 'docker-host',
   }),
   makeResource({
     id: 'host-1',
-    displayName: 'bare-metal-01',
+    label: 'bare-metal-01',
     type: 'agent',
     status: 'stopped',
     node: undefined,
@@ -85,7 +85,7 @@ describe('MentionAutocomplete', () => {
     it('shows all resources (up to 10) when query is empty', () => {
       renderAutocomplete({ query: '' });
       for (const r of defaultResources) {
-        expect(screen.getByText(r.displayName)).toBeInTheDocument();
+        expect(screen.getByText(r.label)).toBeInTheDocument();
       }
     });
 
@@ -103,7 +103,7 @@ describe('MentionAutocomplete', () => {
 
     it('limits results to 10 items', () => {
       const manyResources = Array.from({ length: 15 }, (_, i) =>
-        makeResource({ id: `vm-${i}`, displayName: `server-${i}` }),
+        makeResource({ id: `vm-${i}`, label: `server-${i}` }),
       );
       renderAutocomplete({ resources: manyResources, query: '' });
 
diff --git a/frontend-modern/src/components/AI/Chat/index.tsx b/frontend-modern/src/components/AI/Chat/index.tsx
index 0ef4902c5..c5e43c835 100644
--- a/frontend-modern/src/components/AI/Chat/index.tsx
+++ b/frontend-modern/src/components/AI/Chat/index.tsx
@@ -438,7 +438,7 @@ export const AIChat: Component<AIChatProps> = (props) => {
       const vmid = parseLegacyVmid(vm, platformData);
       mentionCandidates.push({
         id: `vm:${node}:${vmid}`,
-        displayName: getPreferredResourceDisplayName(vm),
+        label: getPreferredResourceDisplayName(vm),
         type: 'vm',
         status: vm.status === 'running' ? 'running' : 'stopped',
         node,
@@ -453,7 +453,7 @@ export const AIChat: Component<AIChatProps> = (props) => {
       const vmid = parseLegacyVmid(container, platformData);
       mentionCandidates.push({
         id: `system-container:${node}:${vmid}`,
-        displayName: getPreferredResourceDisplayName(container),
+        label: getPreferredResourceDisplayName(container),
         type: 'system-container',
         status: container.status === 'running' ? 'running' : 'stopped',
         node,
@@ -482,7 +482,7 @@ export const AIChat: Component<AIChatProps> = (props) => {
           : runtime.status || 'online';
       mentionCandidates.push({
         id: `agent:${dockerActionId}`,
-        displayName,
+        label: displayName,
         type: 'agent',
         status: runtimeStatus,
       });
@@ -494,7 +494,7 @@ export const AIChat: Component<AIChatProps> = (props) => {
           : container.id;
         mentionCandidates.push({
           id: `docker:${dockerActionId}:${originalContainerId}`,
-          displayName: getPreferredResourceDisplayName(container),
+          label: getPreferredResourceDisplayName(container),
           type: 'app-container',
           status: container.status === 'running' ? 'running' : 'exited',
           node: hostnameOrId,
@@ -506,7 +506,7 @@ export const AIChat: Component<AIChatProps> = (props) => {
     for (const node of nodes) {
       mentionCandidates.push({
         id: `node:${node.platformId || ''}:${node.name}`,
-        displayName: getPreferredResourceDisplayName(node),
+        label: getPreferredResourceDisplayName(node),
         type: 'agent',
         status: node.status,
       });
@@ -522,7 +522,7 @@ export const AIChat: Component<AIChatProps> = (props) => {
           : agentResource.status;
       mentionCandidates.push({
         id: `agent:${agentActionId}`,
-        displayName: name,
+        label: name,
         type: 'agent',
         status: agentStatus,
       });
@@ -541,7 +541,7 @@ export const AIChat: Component<AIChatProps> = (props) => {
       mentions.length > 0
         ? mentions.map((mention) => ({
             id: mention.id,
-            name: mention.displayName,
+            name: mention.label,
             type: mention.type,
             node: mention.node,
           }))
@@ -597,7 +597,7 @@ export const AIChat: Component<AIChatProps> = (props) => {
     // Replace @query with the resource name
     const before = currentInput.slice(0, startIndex);
     const after = currentInput.slice(cursorPos);
-    const newValue = `${before}@${resource.displayName} ${after}`;
+    const newValue = `${before}@${resource.label} ${after}`;
 
     setInput(newValue);
     setMentionActive(false);
@@ -613,7 +613,7 @@ export const AIChat: Component<AIChatProps> = (props) => {
     setTimeout(() => {
       if (textareaRef) {
         textareaRef.focus();
-        const newCursorPos = startIndex + resource.displayName.length + 2; // +2 for @ and space
+        const newCursorPos = startIndex + resource.label.length + 2; // +2 for @ and space
         textareaRef.setSelectionRange(newCursorPos, newCursorPos);
       }
     }, 0);