During November 2024, Clement Doumergue focused on enhancing interoperability and stability within the xuelongqy/wallet-core repository. He addressed a breaking change in Polkadot extrinsic encoding by aligning it with Acala Spec 2270 for network 10, ensuring forward compatibility for users. His technical approach involved updating compatibility checks and expanding test coverage to reflect the new encoding requirements, which reduced the risk of production issues. Clement utilized his expertise in blockchain development, cryptography, and C++ to implement these changes. The work demonstrated a deep understanding of protocol specifications and contributed to more robust CI pipelines for ongoing encoding validation.