Alexandre worked on stabilizing migration tooling within the supabase/cli repository, focusing on improving the reliability of local database migrations. He addressed an issue where directories were incorrectly detected as migration files, which previously led to false positives during migration listings. By refining the CLI’s file detection logic in Go, Alexandre ensured that only actual migration files are processed, reducing manual debugging and review time for developers. His targeted fix enhanced the accuracy of migration workflows and increased confidence in CI pipelines. This work demonstrated a solid understanding of CLI development and database migrations, delivering a focused, low-risk improvement to the project.