dsh-gaokao-split: Exam Preparation Time Breakdown

`dsh-gaokao-split` is a pure Node.js plugin for DeepSeek Harness (DSH), maintained by uckkk, focused on breaking down exam preparation time. It has no network dependency, provides precise parameter calculation, and outputs structured results. After satisfying the required dependency environment, users can install and use it via the `dsh plugin add` command. The plugin is suitable for exam preparation planning scenarios, is implemented using Node.js core modules, and is licensed under the MIT License.