May 2026 Monthly Summary for makeplane/plane: Stabilized the Project Creation API by correctly handling the project_lead_id FK (not a User instance), preventing orphaned projects and improving UUID coercion reliability. Expanded regression coverage for lead assignment scenarios and introduced robust error handling for server faults. Strengthened transaction integrity with transaction.atomic(), on_commit scheduling for model activity logging, and improved exception visibility via log_exception. Hardened endpoint responses (500 on unexpected errors), added workspace-membership validation for project lead, and improved rollback behavior testing to ensure no partial data persists. Overall, this work delivers stronger data integrity, clearer API errors, and more reliable project lifecycle management, with reinforced testing and monitoring signals.