Cargo by Harness: Pulling the Rust Agent Back to Local Cargo Cache

CbH is a DSH session mode maintained by Lavaver, featuring a classification workflow licensed under the MIT license. It enables the Agent to prioritize fetching real crate source code and API signatures from the local Cargo cache when writing Rust, while also providing pure JavaScript `macro_rules!` expansion, a compilation feedback loop, four model tools, and six deterministic slash commands. Installation is performed by running `dsh plugin --profile <profile> add <GitHub URL>`, and it can be enabled in a new session via the mode selector. The plugin runs with the privileges of the current DSH process; therefore, you should inspect the source code before installing.