Corinne enhanced the Expensify-App repository by consolidating and expanding documentation for Expensify Card activation and troubleshooting. She focused on improving user guidance by updating navigation paths to match the current UI and clarifying distinctions between commercial card feeds and direct bank connections. Using Markdown and technical writing skills, Corinne expanded the Troubleshooting Company Cards section to address connection errors, CSV import issues, and missing transactions, while also introducing best practices for reliable card connections. Her work, delivered through three targeted commits, improved the depth and clarity of the documentation, streamlining onboarding and reducing user friction for both new and existing users.