Local document knowledge base for DeepSeek Harness: library_add/remove/list, hybrid semantic+keyword library_search with diversity re-ranking, relevance filtering and lost-in-the-middle avoidance, citation-aware injection, library_cite_check and library_diagnose — SQLite-backed index via the storage domain, local embedding, zero model downloads.
DeepSeek Harness plugin: multi-user English vocabulary bank - copy text, pick the user in a popup at the mouse position, LLM translation, SQLite counting, plus printable cards and a quiz loop. 自研 DSH 插件：多用户英语生词库（复制后在鼠标处弹窗点选入库 / LLM 翻译 / SQLite 计次 / 可打印记忆卡与考试闭环）
DeepSeek Harness plugin: convert Word .docx to PDF with the dxpdf Rust/Skia engine — no Microsoft Office, no LibreOffice, no network. It repairs the schema-invalid constructs WPS Office writes and restores Word's odd/even page parity.
