dsh-serum-concentration: Serum Concentration Reference

`dsh-serum-concentration` is a local “memory” plugin for DeepSeek Harness, maintained by uckkk. Using a pure Node tool named `serum_concentration`, it returns explicit recommendations based on input parameters, addressing the insufficient flexibility of hard-coded logic. It has no network dependencies and requires specific version dependencies. Developers can install it via a command and invoke it in a session. The plugin runs with the current process permissions and is suitable for scenarios requiring quick access to parameterized decision logic.