dsh-nga-reader: NGA Forum Reading and AI Integration Plugin for DeepSeek Harness

`dsh-nga-reader` is a plugin for DeepSeek Harness (DSH) that provides a Cordis-based persistent Host/Client bundle, aiming to enhance NGA forum browsing and integrate AI dialogue. It supports forum browsing, login management (QR code/password), reading in standalone Electron windows, and AI interaction features such as text explanation and summarization. It also implements MNGA's core features, including check-in, notifications, private messages, and favorites. Users can install it through GitHub, and it supports Agent invocation to retrieve forum content or perform text analysis.