dsh-memj: A Memory System Based on Project Logic

`dsh-memj` is a memory system plugin for DeepSeek Harness (DSH), designed to address cross-session context loss. It aggregates knowledge along the project's main line, supports a three-tier structure covering project, topic, and global levels, and enables knowledge handoff and archival through the `/memj-handoff` command. The plugin supports Markdown storage and frontend hot-loading for editing prompts and knowledge structures, allowing users to customize rules or enable the model to self-evolve through prompt iteration. It requires no external dependencies; once installed, it provides standardized documentation consolidation and multi-dimensional retrieval, offering developers a complete closed loop for building long-term maintained project knowledge bases.