dsh-reqsys: Requirements Management System (Traceability & Open Items)

The DeepSeek Harness (DSH) plugin dsh-reqsys is a lightweight requirements management system for recording requirement traces and tracking incomplete tasks. It supports browsing, searching, importing, and exporting requirements, and provides a double-click pet feature for quick entry, with all data stored locally. Users can enable it via an installation command and configuration file, and use RESTful APIs for CRUD operations. The plugin no longer depends on the pet, making it suitable for users who need locally persisted records.