Worked on the equinor/isar repository to enhance system fault tolerance by implementing a new intervention path for low-battery mission stop failures. Designed and integrated a dedicated StoppingGoToRecharge state within the Python-based state machine, ensuring that mission stops failing due to low battery are routed to an InterventionNeeded state. This approach improved error handling by reducing silent failures and enabled more responsive intervention and recharge workflows. Emphasized robust state machine design and thorough unit testing to validate the new transitions, resulting in a more resilient system that can promptly address low-battery scenarios and maintain operational reliability without introducing new bugs.