Worked on the clash-verge-rev/clash-verge-rev repository to enhance authentication reliability by addressing a persistent 401 Unauthorized error affecting client integrations. Focused on backend development using Rust, the work involved a detailed root-cause analysis of the encoding and decoding path for Basic Auth headers. By decoding percent-encoded usernames and passwords before constructing the header, the solution prevented double-encoding issues that previously led to authentication failures. This fix improved API reliability and reduced support tickets related to authentication errors. The approach demonstrated strong skills in Rust, API development, and robust debugging, with careful attention to URL parsing and serialization processes.