Worked on upgrading the iOS SDK version for Clio apps within the facebook/buck2 and facebook/buck2-prelude repositories, focusing on build configuration and iOS development using Bazel. The effort involved moving the target SDK from 26.0 to 26.1 and updating deployment targets to propagate MinimumOSVersion from IPHONEOS_DEPLOYMENT_TARGET, ensuring compliance with internal OS policies. Changes were applied consistently across Buck2, Buck2 Prelude, and related Clio build files, while confirming that unrelated macOS components remained unaffected. The work emphasized compatibility, stability, and maintainability, with all updates reviewed and approved to improve release readiness and align with evolving platform requirements.