Previously, our GitHub actions specified the Rust toolchain as `dtolnay/rust-toolchain@stable`, which meant the version could change out from under us. In this case, the move from 1.86 to 1.87 introduced new clippy warnings, causing build failures. Because it will take a little time to fix all the new clippy warnings, this PR pins things to 1.86 for now to unbreak the build. It also replaces `io::Error::new(io::ErrorKind::Other)` with `io::Error::other()` in preparation for 1.87.
codex-core
This crate implements the business logic for Codex. It is designed to be used by the various Codex UIs written in Rust.
Though for non-Rust UIs, we are also working to define a protocol for talking to Codex. See:
You can use the proto subcommand using the executable in the cli crate to speak the protocol using newline-delimited-JSON over stdin/stdout.