Worked on the smithy-lang/smithy-rs repository to enhance code generation ergonomics by implementing automatic Copy trait derivation for named server-generated Rust enums. This feature, developed using Rust and Kotlin, reduced boilerplate and aligned generated code with Rust API guidelines, while ensuring unnamed enums remained unaffected due to their internal String representation. The approach included updating the DeriveEqAndHashSymbolMetadataProvider to conditionally add Copy, comprehensive build and test validation across codegen-server and codegen-core, and the addition of targeted tests for Copy semantics. Documentation was updated with a changelog entry, and the work involved collaborative contributions and thorough CI validation throughout the process.