Worked on the Qovery/console repository to deliver API-first enforcement of PREVIEW mode, enhancing configuration integrity in the application. Used React and TypeScript to implement UI safeguards that disable manual mode selection when PREVIEW is active, ensuring this mode can only be set via the API. Developed a watch hook to monitor the current mode and filtered PREVIEW from dropdowns unless it matches the API-provided initial value. By disabling the mode field for user edits, the solution aligned the frontend with backend state, reducing misconfigurations and supporting more reliable automation for operators. Focused on robust input validation and state management.