Worked on the google/osv-scalibr repository to enhance cross-package integration by exposing the IsArchive function as a public API. This involved renaming the internal isArchive symbol to IsArchive and updating all internal references to use the new public symbol, streamlining archive extension detection for downstream consumers. The approach focused on Go development and codebase refactoring, improving API discoverability and maintainability without introducing new bugs or regressions. By standardizing archive extension handling across modules, the work reduced duplication and integration friction, ensuring that future extensions and external packages can reliably access and utilize the archive detection functionality provided by the API.