diff --git a/frontend-modern/.bundlesize.json b/frontend-modern/.bundlesize.json
index 5d2cf3499..33dac420a 100644
--- a/frontend-modern/.bundlesize.json
+++ b/frontend-modern/.bundlesize.json
@@ -5,34 +5,34 @@
   "defaultThresholdPercent": 15,
   "chunks": {
     "index": {
-      "baselineGzip": 128886
+      "baselineGzip": 117548
     },
     "Alerts": {
-      "baselineGzip": 84692
+      "baselineGzip": 84724
     },
     "Settings": {
-      "baselineGzip": 84417
+      "baselineGzip": 84570
     },
     "InfrastructureWorkspace": {
-      "baselineGzip": 72406
+      "baselineGzip": 72487
     },
     "AIIntelligence": {
-      "baselineGzip": 63969
+      "baselineGzip": 63997
     },
     "Infrastructure": {
-      "baselineGzip": 61643
+      "baselineGzip": 61725
     },
     "Workloads": {
-      "baselineGzip": 48496
+      "baselineGzip": 48573
     },
     "Storage": {
-      "baselineGzip": 39249
+      "baselineGzip": 39286
     },
     "Recovery": {
-      "baselineGzip": 30353
+      "baselineGzip": 30393
     },
     "ScrollToTopButton": {
-      "baselineGzip": 24582
+      "baselineGzip": 24621
     },
     "vendor-ai": {
       "baselineGzip": 20801
@@ -41,48 +41,51 @@
       "baselineGzip": 17298
     },
     "searchParams": {
-      "baselineGzip": 13394
+      "baselineGzip": 13393
     },
     "APIAccessPanel": {
-      "baselineGzip": 10695
+      "baselineGzip": 10767
     },
     "vendor": {
       "baselineGzip": 9853
     },
     "vendor-icons": {
-      "baselineGzip": 9621
+      "baselineGzip": 9595
     },
     "ReportingPanel": {
-      "baselineGzip": 8724
+      "baselineGzip": 8803
     },
     "AuditLogPanel": {
-      "baselineGzip": 8292
+      "baselineGzip": 8357
     },
     "routeStateNavigation": {
-      "baselineGzip": 7708
+      "baselineGzip": 7709
     },
     "UpdatesSettingsPanel": {
-      "baselineGzip": 6623
+      "baselineGzip": 6663
     },
     "Ceph": {
-      "baselineGzip": 6336
+      "baselineGzip": 6345
     },
     "SecurityAuthPanel": {
-      "baselineGzip": 5960
+      "baselineGzip": 5948
     },
     "DiagnosticsPanel": {
-      "baselineGzip": 5684
+      "baselineGzip": 5723
     },
     "HelpIcon": {
-      "baselineGzip": 5377
+      "baselineGzip": 5382
+    },
+    "useUnifiedResources": {
+      "baselineGzip": 5261
     },
     "OrganizationSharingPanel": {
-      "baselineGzip": 5195
+      "baselineGzip": 5214
     }
   },
   "totals": {
     "js": {
-      "baselineGzip": 878113
+      "baselineGzip": 883834
     },
     "css": {
       "baselineGzip": 24654
diff --git a/frontend-modern/src/App.tsx b/frontend-modern/src/App.tsx
index f13f099a8..1ab76744b 100644
--- a/frontend-modern/src/App.tsx
+++ b/frontend-modern/src/App.tsx
@@ -16,7 +16,10 @@ import { createTooltipSystem } from './components/shared/Tooltip';
 import { TokenRevealDialog } from './components/TokenRevealDialog';
 import { UpdateProgressModal } from './components/UpdateProgressModal';
 import { UpdatesAPI, type UpdateStatus } from './api/updates';
-import { AIChat } from './components/AI/Chat';
+// AIChat is the side-panel chat UI plus its store deps (markdown rendering,
+// tool-call formatting, prompt scaffolding). Lazy-load behind aiChatStore.isOpen
+// so the entry bundle stays out of "everything users might ever click."
+const AIChat = lazy(() => import('./components/AI/Chat').then((m) => ({ default: m.AIChat })));
 import { aiChatStore } from './stores/aiChat';
 import { useKeyboardShortcuts } from './hooks/useKeyboardShortcuts';
 import { useKioskMode } from '@/hooks/useKioskMode';
@@ -406,8 +409,12 @@ function App() {
                             {props.children}
                           </AppLayout>
                         </div>
-                        {/* AI Panel - slides in from right, pushes content */}
-                        <AIChat onClose={() => aiChatStore.close()} />
+                        {/* AI Panel - slides in from right, pushes content.
+                            Mounted only when open so the lazy chunk only
+                            downloads on first chat-open click. */}
+                        <Show when={aiChatStore.isOpenSignal()}>
+                          <AIChat onClose={() => aiChatStore.close()} />
+                        </Show>
                       </div>
                       <KeyboardShortcutsModal
                         isOpen={shortcutsOpen()}