Worked on the openclaw/openclaw repository to refine browser client error handling by introducing a dedicated error type, BrowserServiceError, using TypeScript. This enhancement separated application-level errors from network reachability issues within the browser fetch module, addressing the problem of mislabeling failures and improving the accuracy of user feedback. The approach involved adjusting error propagation logic so that application errors were no longer wrapped with generic network messages, thereby enhancing error diagnostics for browser-based flows. The work demonstrated skills in browser development and error handling, focusing on improving maintainability and clarity in how errors are surfaced to both users and developers.