Worked on improving volume permission handling in the rapyuta-robotics/rapyuta-io-cli repository, focusing on reliability and performance. Addressed a bug by replacing the previous list-based logic for identifying volumes requiring permission fixup with a deduplicated approach using a dictionary keyed by host and container paths. This change reduced redundant permission operations and improved the correctness of the mount permission workflow. Expanded unit test coverage to include various deduplication scenarios, ensuring future stability and preventing regressions. Utilized backend development skills with Python and unit testing to deliver more predictable container initialization and faster startup times for the init-perm sidecar process.