Developed a persistent JWT signing key mechanism for the amantus-ai/vibetunnel repository, enabling session continuity across server restarts. The solution involved atomic creation and strict validation of signing keys, ensuring that existing tokens remained valid and minimizing user session disruptions. Owner-only permission repair and robust validation checks were implemented to strengthen security and prevent unauthorized access. The work was delivered as a single, well-documented commit, reflecting a focused and collaborative approach. Leveraging Node.js and TypeScript for backend development, the implementation adhered to security best practices and included comprehensive testing to ensure reliability and maintainability of the authentication process.