Update visible node settings immediately after admin saves

Hop-State: A_06FP8ATA10D8VTQA9QBS6KR
Hop-Proposal: R_06FP8ASAVWCYV52CHF5AE1G
Hop-Task: T_06FP8AC8PWCNKR7C8686AXG
Hop-Attempt: AT_06FP8AC8PXWTNRRHT6JBPMG

src/app/admin/page.tsx

@@ -91,6 +91,10 @@ export default function AdminPage() {
                 body: JSON.stringify(payload),
             });
             if (res.ok) {
+                const data = await res.json().catch(() => ({}));
+                if (data.node) {
+                    window.dispatchEvent(new CustomEvent('synapsis:node-updated', { detail: data.node }));
+                }
                 showToast('Settings saved!', 'success');
                 refreshAccentColor();
             } else {

src/components/RightSidebar.tsx

@@ -10,9 +10,18 @@ interface Admin {
     avatarUrl: string | null;
 }
 
+interface NodeInfo {
+    name: string;
+    description: string;
+    longDescription: string;
+    rules: string;
+    bannerUrl: string;
+    admins: Admin[];
+}
+
 export function RightSidebar() {
     const fallbackDescription = process.env.NEXT_PUBLIC_NODE_DESCRIPTION || 'A swarm social network node.';
-    const [nodeInfo, setNodeInfo] = useState({
+    const [nodeInfo, setNodeInfo] = useState<NodeInfo>({
         name: process.env.NEXT_PUBLIC_NODE_NAME || 'Synapsis Node',
         description: fallbackDescription,
         longDescription: '',
@@ -28,7 +37,7 @@ export function RightSidebar() {
     const [loading, setLoading] = useState(true);
 
     useEffect(() => {
-        fetch('/api/node', { cache: 'no-store' })
+        const loadNodeInfo = () => fetch('/api/node', { cache: 'no-store' })
             .then(res => res.json())
             .then(data => {
                 setNodeInfo(prev => ({
@@ -45,11 +54,34 @@ export function RightSidebar() {
             .catch(() => { })
             .finally(() => setLoading(false));
 
+        const handleNodeUpdated = (event: Event) => {
+            const updatedNode = (event as CustomEvent<Partial<NodeInfo>>).detail;
+            if (!updatedNode) {
+                void loadNodeInfo();
+                return;
+            }
+            setNodeInfo(prev => ({
+                ...prev,
+                ...updatedNode,
+                name: updatedNode.name ?? prev.name,
+                description: updatedNode.description ?? prev.description,
+                longDescription: updatedNode.longDescription ?? prev.longDescription,
+                rules: updatedNode.rules ?? prev.rules,
+                bannerUrl: updatedNode.bannerUrl ?? prev.bannerUrl,
+                admins: updatedNode.admins ?? prev.admins,
+            }));
+        };
+
+        void loadNodeInfo();
+        window.addEventListener('synapsis:node-updated', handleNodeUpdated);
+
         // Fetch version info
         fetch('/api/version')
             .then(res => res.json())
             .then(data => setVersion(data))
             .catch(() => setVersion({ version: 'unknown', buildDate: null }));
+
+        return () => window.removeEventListener('synapsis:node-updated', handleNodeUpdated);
     }, []);
 
     if (loading) {

src/components/Sidebar.tsx

@@ -36,7 +36,7 @@ export function Sidebar() {
     const formattedHandle = user ? shortHandle(user.handle) : '';
 
     useEffect(() => {
-        fetch('/api/node')
+        const loadLogo = () => fetch('/api/node', { cache: 'no-store' })
             .then(res => res.json())
             .then(data => {
                 setCustomLogoUrl(data.logoUrl || null);
@@ -44,6 +44,19 @@ export function Sidebar() {
             .catch(() => {
                 setCustomLogoUrl(null);
             });
+
+        const handleNodeUpdated = (event: Event) => {
+            const updatedNode = (event as CustomEvent<{ logoUrl?: string | null }>).detail;
+            if (updatedNode && 'logoUrl' in updatedNode) {
+                setCustomLogoUrl(updatedNode.logoUrl || null);
+                return;
+            }
+            void loadLogo();
+        };
+
+        void loadLogo();
+        window.addEventListener('synapsis:node-updated', handleNodeUpdated);
+        return () => window.removeEventListener('synapsis:node-updated', handleNodeUpdated);
     }, []);
 
     const fetchUnreadNotifications = useCallback(() => {