dsh-chemistry-terms: Chemistry Terms Search Plugin

`dsh-chemistry-terms` is a memory-type plugin for DeepSeek Harness (DSH), designed to reduce an agent's reliance on network access or large contexts for chemistry knowledge retrieval. The plugin works without a network, is implemented purely in Node, and includes built-in chemistry terminology data. It provides two tools, `list_chemistry` and `get_chemistry`, supporting chemistry term detail lookup by name or ID. Users can install it with the command `dsh plugin add github:uckkk/dsh-chemistry-terms`. The plugin is suitable for agent development that requires local, offline chemistry knowledge support, and it is licensed under the MIT License.