dsh-bandwidth: Bandwidth Requirement Estimation

dsh-bandwidth is a DeepSeek Harness plugin maintained by uckkk, designed to provide precise bandwidth usage calculations and help agent developers optimize resource allocation. The plugin is implemented entirely in Node.js, has no network dependencies, and focuses on calculating bandwidth requirements based on parameters. Users can install it via the `dsh plugin add` command, and after installation, use it by directly invoking the registered `bandwidth` tool in a session.