dsh-study-coach: DSH Study Coach Plugin

The DeepSeek Harness (DSH) plugin `dsh-study-coach` is designed specifically for self-study scenarios, supporting course breakdown, mastery tracking, and progress management. Developed by Ame-Choo, it provides a conversational tool and a web panel. Core features include a three-layer knowledge map, a six-level mastery assessment, a logging mechanism that requires evidence to be attached, and auxiliary tools such as Ebbinghaus memory cards. Users install it via npm and use it in “Study Coach” mode. Data is stored independently locally, and it is released under the MIT license.