dsh-tank-setup: Tank Setup Plugin

`dsh-tank-setup` is a DeepSeek Harness plugin maintained by uckkk for generating configuration plans in aquarium care scenarios. It is implemented purely in Node.js, requires no network dependencies, and can quickly return setup and care plans based on input parameters. Before use, ensure that the version requirements for `@deepseek-ai/cordis` and `@deepseek-ai/dsh-tools` are satisfied. Once installed, it can be invoked directly in a session. Developers should ensure it is installed from a trusted source and review its source code.