dsh-study-steward: Personal Learning and Execution Steward

`dsh-study-steward` is a DeepSeek Harness (DSH) agent preset developed by adsikito, designed to transform general-purpose dialogue into an actionable personal learning and management system. The preset provides full tool capabilities and configures a study steward persona that maintains three dimensions: content, tasks, and mastery. It includes daily recording conventions, behavioral rules, and 26 content templates. Users must install it via the command line and copy the rule package into a local notes directory for it to take effect. This preset is purely a configuration file, contains no personal data, and all reference examples are fictional.