Fix unread badge refresh and reply thread UI

src/app/chat/page.tsx

@@ -126,12 +126,16 @@ export default function ChatPage() {
 
     const markAsRead = async (conversationId: string) => {
         try {
-            await fetch('/api/swarm/chat/messages', {
+            const res = await fetch('/api/swarm/chat/messages', {
                 method: 'PATCH',
                 headers: { 'Content-Type': 'application/json' },
                 body: JSON.stringify({ conversationId })
             });
+            if (!res.ok) {
+                return;
+            }
             setConversations(prev => prev.map(c => c.id === conversationId ? { ...c, unreadCount: 0 } : c));
+            window.dispatchEvent(new Event('synapsis:chat-updated'));
         } catch { }
     };
 

src/app/notifications/page.tsx

@@ -69,6 +69,7 @@ export default function NotificationsPage() {
                 throw new Error('Failed to mark notifications as read');
             }
             setNotifications(prev => prev.map(n => ({ ...n, readAt: new Date().toISOString() })));
+            window.dispatchEvent(new Event('synapsis:notifications-updated'));
         } catch (err) {
             console.error('Failed to mark notifications as read:', err);
         }