fix: correct notification session id

src/components/app/AppContent.tsx

@@ -46,6 +46,7 @@ function AppContentInner() {
     setShowSettings,
     openSettings,
     refreshProjectsSilently,
+    registerOptimisticSession,
     sidebarSharedProps,
     handleNewSession,
   } = useProjectsState({
@@ -172,6 +173,9 @@ function AppContentInner() {
           onNavigateToSession={(targetSessionId: string, options) =>
             navigate(`/session/${targetSessionId}`, { replace: Boolean(options?.replace) })
           }
+          onSessionEstablished={(targetSessionId, context) =>
+            registerOptimisticSession({ sessionId: targetSessionId, ...context })
+          }
           onShowSettings={() => setShowSettings(true)}
           externalMessageUpdate={externalMessageUpdate}
           newSessionTrigger={newSessionTrigger}

src/components/chat/hooks/useChatComposerState.ts

@@ -19,6 +19,7 @@ import type {
   ChatMessage,
   PendingPermissionRequest,
   PermissionMode,
+  SessionEstablishedContext,
 } from '../types/types';
 import type { Project, ProjectSession, LLMProvider, ProviderModelsCacheInfo } from '../../../types/app';
 import { escapeRegExp } from '../utils/chatFormatting';
@@ -51,7 +52,7 @@ interface UseChatComposerStateArgs {
    * stable for the conversation's whole lifetime — the consumer navigates to
    * /session/:id and records it as the current session.
    */
-  onSessionEstablished?: (sessionId: string) => void;
+  onSessionEstablished?: (sessionId: string, context: SessionEstablishedContext) => void;
   onInputFocusChange?: (focused: boolean) => void;
   onFileOpen?: (filePath: string, diffInfo?: unknown) => void;
   onShowSettings?: () => void;
@@ -606,6 +607,7 @@ export function useChatComposerState({
       }
 
       const resolvedProjectPath = selectedProject.fullPath || selectedProject.path || '';
+      const sessionSummary = getNotificationSessionSummary(selectedSession, currentInput);
 
       // The conversation always has a stable backend-allocated session id
       // BEFORE the first websocket send: brand-new chats allocate one here
@@ -646,7 +648,11 @@ export function useChatComposerState({
           return;
         }
 
-        onSessionEstablished?.(targetSessionId);
+        onSessionEstablished?.(targetSessionId, {
+          provider,
+          project: selectedProject,
+          summary: sessionSummary,
+        });
       }
 
       const userMessage: ChatMessage = {
@@ -696,8 +702,6 @@ export function useChatComposerState({
       };
 
       const toolsSettings = getToolsSettings();
-      const sessionSummary = getNotificationSessionSummary(selectedSession, currentInput);
-
       const model =
         provider === 'cursor'
           ? cursorModel

src/components/chat/types/types.ts

@@ -107,6 +107,12 @@ export type SessionNavigationOptions = {
   replace?: boolean;
 };
 
+export type SessionEstablishedContext = {
+  provider: LLMProvider;
+  project: Project;
+  summary?: string | null;
+};
+
 export interface ChatInterfaceProps {
   selectedProject: Project | null;
   selectedSession: ProjectSession | null;
@@ -118,6 +124,7 @@ export interface ChatInterfaceProps {
   onSessionIdle?: MarkSessionIdle;
   processingSessions?: SessionActivityMap;
   onNavigateToSession?: (targetSessionId: string, options?: SessionNavigationOptions) => void;
+  onSessionEstablished?: (sessionId: string, context: SessionEstablishedContext) => void;
   onShowSettings?: () => void;
   autoExpandTools?: boolean;
   showRawParameters?: boolean;

src/components/chat/view/ChatInterface.tsx

@@ -29,6 +29,7 @@ function ChatInterface({
   onSessionIdle,
   processingSessions,
   onNavigateToSession,
+  onSessionEstablished,
   onShowSettings,
   autoExpandTools,
   showRawParameters,
@@ -138,10 +139,11 @@ function ChatInterface({
   // Brand-new conversation: the composer allocated a stable session id via
   // the session gateway before the first send. Record it locally and put it
   // in the URL — this id never changes again, so there is no later handoff.
-  const handleSessionEstablished = useCallback((sessionId: string) => {
+  const handleSessionEstablished = useCallback<NonNullable<ChatInterfaceProps['onSessionEstablished']>>((sessionId, context) => {
     setCurrentSessionId(sessionId);
+    onSessionEstablished?.(sessionId, context);
     onNavigateToSession?.(sessionId);
-  }, [setCurrentSessionId, onNavigateToSession]);
+  }, [setCurrentSessionId, onSessionEstablished, onNavigateToSession]);
 
   const {
     input,

src/components/main-content/types/types.ts

@@ -6,7 +6,7 @@ import type {
   MarkSessionProcessing,
   SessionActivityMap,
 } from '../../../hooks/useSessionProtection';
-import type { SessionNavigationOptions } from '../../chat/types/types';
+import type { SessionEstablishedContext, SessionNavigationOptions } from '../../chat/types/types';
 
 export type TaskMasterTask = {
   id: string | number;
@@ -52,6 +52,7 @@ export type MainContentProps = {
   onSessionIdle: MarkSessionIdle;
   processingSessions: SessionActivityMap;
   onNavigateToSession: (targetSessionId: string, options?: SessionNavigationOptions) => void;
+  onSessionEstablished: (sessionId: string, context: SessionEstablishedContext) => void;
   onShowSettings: () => void;
   externalMessageUpdate: number;
   newSessionTrigger: number;

src/components/main-content/view/MainContent.tsx

@@ -45,6 +45,7 @@ function MainContent({
   onSessionIdle,
   processingSessions,
   onNavigateToSession,
+  onSessionEstablished,
   onShowSettings,
   externalMessageUpdate,
   newSessionTrigger,
@@ -131,6 +132,7 @@ function MainContent({
                 onSessionIdle={onSessionIdle}
                 processingSessions={processingSessions}
                 onNavigateToSession={onNavigateToSession}
+                onSessionEstablished={onSessionEstablished}
                 onShowSettings={onShowSettings}
                 autoExpandTools={autoExpandTools}
                 showRawParameters={showRawParameters}