Fix packet sidebar retention

frontend/src/components/PacketVisualizer3D.tsx

@@ -1030,6 +1030,7 @@ export function PacketVisualizer3D({
   // Persist visualizer controls to localStorage on change
   useEffect(() => {
     saveVisualizerSettings({
+      ...getVisualizerSettings(),
       showAmbiguousPaths,
       showAmbiguousNodes,
       useAdvertPathHints,

frontend/src/components/VisualizerView.tsx

@@ -5,6 +5,7 @@ import { PacketVisualizer3D } from './PacketVisualizer3D';
 import { RawPacketList } from './RawPacketList';
 import { Tabs, TabsContent, TabsList, TabsTrigger } from './ui/tabs';
 import { cn } from '@/lib/utils';
+import { getVisualizerSettings, saveVisualizerSettings } from '../utils/visualizerSettings';
 
 interface VisualizerViewProps {
   packets: RawPacket[];
@@ -13,10 +14,18 @@ interface VisualizerViewProps {
 }
 
 export function VisualizerView({ packets, contacts, config }: VisualizerViewProps) {
-  const [fullScreen, setFullScreen] = useState(false);
+  const [fullScreen, setFullScreen] = useState(() => getVisualizerSettings().hidePacketFeed);
   const [paneFullScreen, setPaneFullScreen] = useState(false);
   const containerRef = useRef<HTMLDivElement>(null);
 
+  // Persist packet feed visibility to localStorage
+  useEffect(() => {
+    const current = getVisualizerSettings();
+    if (current.hidePacketFeed !== fullScreen) {
+      saveVisualizerSettings({ ...current, hidePacketFeed: fullScreen });
+    }
+  }, [fullScreen]);
+
   // Sync state when browser exits fullscreen (Escape, F11, etc.)
   useEffect(() => {
     const handler = () => {

frontend/src/utils/visualizerSettings.ts

@@ -12,6 +12,7 @@ export interface VisualizerSettings {
   pruneStaleNodes: boolean;
   autoOrbit: boolean;
   showControls: boolean;
+  hidePacketFeed: boolean;
 }
 
 export const VISUALIZER_DEFAULTS: VisualizerSettings = {
@@ -26,6 +27,7 @@ export const VISUALIZER_DEFAULTS: VisualizerSettings = {
   pruneStaleNodes: false,
   autoOrbit: false,
   showControls: true,
+  hidePacketFeed: false,
 };
 
 export function getVisualizerSettings(): VisualizerSettings {
@@ -74,6 +76,10 @@ export function getVisualizerSettings(): VisualizerSettings {
         typeof parsed.showControls === 'boolean'
           ? parsed.showControls
           : VISUALIZER_DEFAULTS.showControls,
+      hidePacketFeed:
+        typeof parsed.hidePacketFeed === 'boolean'
+          ? parsed.hidePacketFeed
+          : VISUALIZER_DEFAULTS.hidePacketFeed,
     };
   } catch {
     return { ...VISUALIZER_DEFAULTS };