dsh-word-vault: Multi-User English Vocabulary Library and Memorization Plugin

`dsh-word-vault` is an English vocabulary plugin designed specifically for DeepSeek Harness. Built on a plugin-based architecture, it enables seamless word entry through clipboard monitoring and uses LLMs to automatically generate word breakdowns, mnemonics, and example sentences. The plugin supports multi-user management, persistent SQLite storage, an online exam loop that marks words as mastered after three consecutive correct answers, and generation of engaging memory cards in HTML, PDF, and Word formats. Its features include SAPI-based text-to-speech and photo recognition for marking words. Compatible with DSH 0.2 and later, it runs in a PowerShell environment and aims to address the inefficient entry process of traditional vocabulary books, offering users a complete closed-loop toolchain from entry to review.