Worked on enhancing transcript policy robustness in the openclaw/openclaw repository, focusing on secure handling of thinkingSignature blobs across multiple providers. Leveraged TypeScript and backend development skills to clarify and enforce policy logic, particularly for providers like kimi-coding that cannot process re-sent signature blobs. Introduced a named Set to streamline evaluation of anthropic signature-excluded providers, reducing edge cases and simplifying policy maintenance. Emphasized testing to ensure that sensitive data was not inadvertently preserved or leaked, resulting in improved cross-provider consistency and stronger governance of policy rules. The work demonstrated thoughtful full stack development within a complex, multi-provider environment.