dsh-electricity-bill: Tiered Electricity Bill Calculator

The core philosophy of the DeepSeek Harness (DSH) plugin `dsh-electricity-bill` is "everything is a plugin." Maintained by `uckkk`, the plugin is specifically designed to meet the need for tiered electricity bill calculation. By registering a tool interface, it provides precise electricity bill calculation capabilities within DSH sessions. It is implemented purely in Node.js, with no network dependencies, runs quickly, and protects privacy. Installation is simple, requiring only the `dsh plugin add` command. It relies on libraries such as `@deepseek-ai/cordis` and is suitable for developers who need to integrate electricity bill calculation logic into agents or automated workflows.