Worked on stabilizing the user login flow for the BerriAI/litellm repository, addressing authentication issues caused by reverse proxy configurations. Refactored the login and UI code to decouple server-side rendering from client logic, improving maintainability and supporting multi-deployment scenarios. Introduced a sessionStorage-based token storage mechanism with safeguards for SSR environments, replacing the previous HttpOnly cookie approach to ensure JWT accessibility across nginx-ingress-like deployments. Enhanced reliability and security by unifying token cookie handling through shared TypeScript utilities and dynamic path resolution. Expanded unit and integration test coverage for login and token flows, reinforcing deployment robustness using Node, React, and Python.