Worked on the highlight/highlight repository to update documentation supporting the migration to the Next.js app router. Focused on aligning onboarding materials and instrumentation guidance with the new app directory structure, the work ensured that users could configure analytics and performance monitoring correctly under the updated framework. Using Markdown for documentation and leveraging knowledge of Next.js, the developer revised instructions to reflect the shift from the ‘pages’ directory to the ‘app’ directory. This targeted update reduced onboarding friction and kept documentation synchronized with code changes, helping users avoid confusion during migration and maintain best practices with the latest Next.js conventions.