dsh-insurance-estimate: Auto Insurance Cost Estimation

The “everything is a plugin” philosophy of DSH (DeepSeek Harness) enables developers to extend agent capabilities. `dsh-insurance-estimate` is a car insurance premium estimation plugin maintained by uckkk, designed to address the imprecision of general-purpose large language models. It provides clear pricing recommendations through locally deployed, precise calculation based purely on Node.js. The plugin requires no network requests, relies on specific libraries such as `@deepseek-ai/cordis`, and is released under the MIT license, offering a lightweight, local car insurance calculation solution for the DSH ecosystem.