Worked on the espressif/esp-usb repository to enhance the robustness and reliability of HID Host disconnection handling in embedded systems. Focused on C programming and device driver development, the work addressed memory leaks in transfer buffers and improved state management to prevent deadlocks and dangling pointers during device disconnects. By separating strict and best-effort cleanup paths and refining error propagation, the changes ensured more predictable and stable HID device interactions. Documentation was updated to clarify interface state transitions and cleanup semantics, contributing to improved maintainability and resilience of the codebase. The work prioritized stability and clear API behavior for HID devices.