Worked on stabilizing the end-to-end testing and authentication workflows for the kubernetes-sigs/headlamp project, focusing on restoring reliability after experimental changes. Addressed a critical bug by reverting recent modifications to authentication logic and namespace accessibility tests, simplifying the test suite to ensure consistent and predictable outcomes. Maintained continuous integration reliability by preserving a stable authentication flow, which reduced test fragility and improved overall test suite stability. Utilized JavaScript and TypeScript in conjunction with Playwright to manage and execute frontend tests, emphasizing robust test coverage and maintainability. The work prioritized a stable development baseline, supporting ongoing frontend development and testing efforts.