Worked on cross-repository deprecation updates to clarify command usage for content-addressable storage tooling, focusing on the facebook/sapling and facebook/buck2 repositories. Updated documentation to deprecate the frecli cas command in favor of the cas CLI, ensuring users received clear guidance and a consistent migration path. Employed Markdown for documentation and applied best practices in CLI development and change communication. The work improved user experience by reducing confusion around deprecated commands and aligned both projects with CAS CLI-centric workflows. No bugs were fixed during this period, with efforts concentrated on feature development and maintaining cross-repo consistency in documentation and messaging.