feat(web): add missing properties to client-side ask events

Add isAnonymous to wa_ask_thread_created and messageCount to
wa_ask_message_sent so they carry the same data as the server-side
events.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: msukkari

packages/web/src/features/chat/components/chatThread/chatThread.tsx

@@ -128,6 +128,7 @@ export const ChatThread = ({
 
         captureEvent('wa_ask_message_sent', {
             chatId,
+            messageCount: messages.length + 1,
             selectedReposCount: selectedSearchScopes.length,
         });
 

packages/web/src/features/chat/useCreateNewChatThread.ts

@@ -48,6 +48,7 @@ export const useCreateNewChatThread = ({ isAuthenticated = false }: UseCreateNew
 
         captureEvent('wa_ask_thread_created', {
             chatId: response.id,
+            isAnonymous: response.isAnonymous,
         });
 
         setChatState({

packages/web/src/lib/posthogEvents.ts

@@ -161,9 +161,11 @@ export type PosthogEventMap = {
     },
     wa_ask_thread_created: {
         chatId: string,
+        isAnonymous: boolean,
     },
     wa_ask_message_sent: {
         chatId: string,
+        messageCount: number,
         selectedReposCount: number,
     },
     ask_thread_created: {