Worked on enhancing JWT audience validation in the litestar-org/litestar repository by relaxing the type hinting for the Token.aud field to accept both a single string and a sequence of strings. This update improved multi-audience support and increased flexibility in token decoding. Developed comprehensive end-to-end tests in Python to validate correct handling of single, multiple, and invalid audience values, ensuring robust security and reliability. Focused on type hinting and security best practices, the work emphasized thorough testing to maintain code quality. No bugs were fixed during this period, with efforts concentrated on delivering this targeted feature enhancement for JWT handling.