Worked on the OpenCTI-Platform/connectors repository, focusing on enhancing the quality and maintainability of the test suite. Applied Python skills to refactor test files, aligning them with Black code formatting standards and removing unused imports to improve readability and consistency. This targeted code maintenance effort did not introduce user-facing features but aimed to reduce the long-term maintenance burden and mitigate the risk of regressions. By streamlining the test codebase, the work is expected to contribute to greater CI stability and faster future development. The approach emphasized clean, well-formatted code and adherence to best practices in Python development workflows.