Worked on modernizing the Fuchsia API integration within the dart-lang/sdk repository by migrating the thread interrupter from the deprecated zx_task_suspend_token to the current zx_task_suspend syscall. This C++ system programming effort focused on ensuring forward compatibility and reducing future maintenance risks by aligning with updated Fuchsia interfaces. The migration involved updating API calls, validating the build to confirm no regressions, and maintaining compatibility with ongoing Fuchsia platform changes. Leveraging expertise in API migration and low-level system programming, the work ensured that the repository’s threading mechanisms remain robust and maintainable as the underlying platform evolves, with all changes fully validated.