dsh-knowledge-graph: Local knowledge base and Obsidian-style graph in DSH

dsh-knowledge-graph is a community plugin for DeepSeek Harness that maintains a local Markdown knowledge base: selecting text or saving messages in a conversation writes to the data directory in real-time; in the background, it uses the current model to sequentially organize these entries into wiki pages for concepts, persons, things, and events; the left sidebar provides force-directed graphs and page reading. The Agent is equipped solely with read-only tools: `knowledge_index`, `read`, `search`, and `graph`. Global rules mandate reading the index before answering and citing knowledge sources. Installation requires DSH >= 0.2.0-rc.2 and can be performed using `dsh plugin add github:3722593qq/dsh-knowledge-graph` or the v0.1.3 release package. The knowledge base defaults to `~/.dsh/knowledge` and can be adjusted via `rootDir` or `DSH_KNOWLEDGE_DIR`. MIT License, maintained by 3722593qq.