Felipe Gangorra focused on improving the reliability and maintainability of the MangaLivre integration within the keiyoushi/extensions-source repository. During this period, he addressed persistent 403 and 404 errors by refactoring the MangaLivre class, removing an unnecessary interceptor, and streamlining the code path to reduce user-facing issues. His work included updating the build.gradle configuration and incrementing the version code to align with the release process. Felipe utilized Kotlin and Gradle, applying his skills in API integration and Android development. The changes enhanced error handling and simplified future maintenance, reflecting a targeted, quality-driven approach to resolving a specific production issue.