xby-lit: DeepSeek Harness Literature Review Assistant

xby-lit is a literature review assistant plugin for DeepSeek Harness (DSH), essentially an MCP server. It provides the `arxiv_search` and `dblp_search` features, enabling direct connections to academic databases to help LLMs perform literature retrieval. Users must first obtain an API key from the Xiaobenyang official website and install it through the DSH Web configuration file. The plugin supports automatic persistence of API keys, aiming to streamline researchers' workflows.