dsh-md-quiz: A Markdown Quiz-Style Reading Plugin for DeepSeek Harness

`dsh-md-quiz` is a web plugin for DeepSeek Harness (DSH), designed to transform Markdown document reading into a structured quiz-based reading workflow. It helps users systematically learn and review document content through five stages: diagnosis, levels, guided reading, checkpoints, and settlement. The plugin registers the `md-quiz-read` skill, the `/mdquiz` command, and a restricted file-reading route (supporting only formats such as .md and .txt, with a size limit of 512KB) with DSH. It also provides a sidebar level-progression panel and a dedicated "Reading Area" tab in the web interface, enabling users to view the original text and automatically identify session messages. Installation requires pnpm as a dependency, and the plugin can be used after adding it via the `dsh plugin` command and restarting the service. Users can