dsh-ev-vs-fuel: EV vs. Fuel Cost Comparison Plugin

`dsh-ev-vs-fuel` is an online utility plugin in the DeepSeek Harness (DSH) ecosystem, maintained by uckkk. It is implemented in pure Node.js, requires no network requests, and is designed to accurately compare the operating costs of fuel vehicles and electric vehicles. The installation command is `dsh plugin add github:uckkk/dsh-ev-vs-fuel`. When using it, specific dependency versions must be satisfied, and it runs with the permissions of the current process. It is recommended to review the source code and license before use.