docs: integrate reo.dev (#13192)

www/apps/book/.env.sample

@@ -18,4 +18,5 @@ NEXT_PUBLIC_BASE_PATH=
 NEXT_PUBLIC_GA_ID=
 NEXT_PUBLIC_PROD_BASE_URL=
 NEXT_PUBLIC_INTEGRATION_ID=
-NEXT_MCP_SERVER_URL=
+NEXT_MCP_SERVER_URL=
+NEXT_PUBLIC_REO_DEV_CLIENT_ID=

www/apps/book/providers/index.tsx

@@ -23,7 +23,10 @@ type ProvidersProps = {
 
 const Providers = ({ children, aiAssistantProps = {} }: ProvidersProps) => {
   return (
-    <AnalyticsProvider writeKey={process.env.NEXT_PUBLIC_SEGMENT_API_KEY}>
+    <AnalyticsProvider
+      segmentWriteKey={process.env.NEXT_PUBLIC_SEGMENT_API_KEY}
+      reoDevKey={process.env.NEXT_PUBLIC_REO_DEV_CLIENT_ID}
+    >
       <SiteConfigProvider config={config}>
         <LearningPathProvider>
           <NotificationProvider>