Yan Chen enhanced memory safety and error handling in the fastly/Viceroy repository by redesigning the adapter module for managed languages such as Go and Python. Using Rust and WebAssembly, Yan implemented a two-page memory offset, allowing the adapter to maintain its state and stack without risking user memory corruption. Additionally, Yan improved WebAssembly exit code logic to ensure that successful exits are not misreported as errors, refining error reporting for better reliability. In the bytecodealliance/wasm-tools repository, Yan extended the wit-parser to support digits in non-initial segments of kebab-case identifiers, updating related tooling and tests for broader compatibility.