dsh-takeout-cost: Takeout Store Daily Turnover Calculator

The `dsh-takeout-cost` plugin for DeepSeek Harness (DSH), maintained by uckkk, is used to calculate the daily revenue of a takeout restaurant. It is implemented purely with Node, has no network dependencies, and can register the `takeout_cost` tool after installation. Before use, ensure the environment meets the required dependencies. The plugin is community-maintained and can be invoked in DSH sessions after installation.