feat(agent): add opt-in push notifications

web/src/App.tsx

@@ -27,6 +27,7 @@ import { ChatAttachmentList } from "@/components/chat/chat-attachment-list";
 import { ChatComposer } from "@/components/chat/chat-composer";
 import { ChatMessagesPanel } from "@/components/chat/chat-messages-panel";
 import { AgentConversation } from "@/components/agent/agent-conversation";
+import { AgentNotifications } from "@/components/agent/agent-notifications";
 import { SearchResultsPanel } from "@/components/search/search-results-panel";
 import { SearchMatchLabel } from "@/components/search/search-match-label";
 import { SybilCharacter } from "@/components/sybil-character";
@@ -965,6 +966,7 @@ export default function App() {
     isCheckingSession,
     isSigningIn,
     isAuthenticated,
+    authMode,
     authError,
     handleAuthFailure: baseHandleAuthFailure,
     handleSignIn,
@@ -3721,6 +3723,7 @@ export default function App() {
               <p className="px-3 py-2 text-xs text-muted-foreground">Showing the 100 most recent matches. Refine your search to find more.</p>
             ) : null}
           </div>
+          {authMode === "token" ? <AgentNotifications onLogout={logout} /> : null}
         </aside>
 
         <main