During October 2025, Syuu focused on improving the reliability of the scylladb/scylla-cluster-tests repository by addressing a persistent file permission issue affecting test workflows. Using Python and shell scripting, Syuu implemented a targeted fix in the test utilities to ensure that downloaded files consistently receive 644 permissions, even under strict umask settings. This adjustment resolved recurring 'Permission denied' errors during artifact extraction, particularly for the scylla user, and reduced the need for manual intervention in CI environments. The work demonstrated a strong understanding of file permissions and bug fixing, resulting in more stable and predictable cluster test executions.