wilshi/dsh-agentos-context: Add Memory and Ontology Workbench for DSH

This is a community fork of the internal package `@deepseek-ai/dsh-agentos-context`, published as `@wilshi/dsh-agentos-context`. It is licensed under the MIT license, version 0.8.2, requires Node >=22.19.0, and is maintained by WilShi. It adds automatic long-term memory, scope retrieval, ontology graphs with source citations, and a local document knowledge base to the DSH profile. Core capabilities include enabled-by-default human prompt auto-extraction and distillation fallback, 3+1 layered memory, protection for credential-like content (automatic skipping with `SECRET_REJECTED`), lexical and vector hybrid retrieval, 2D/3D relationship graphs with relation extraction requiring human confirmation, and read-only compatibility with legacy OpenContext data along with incremental schema migration. DSH Web/Desktop is mounted by default via `dsh-web-app`, while profiles without this component can be dynamically added or removed using the `dsh plugin add/remove` commands. It operates under the permissions of the current dsh process; users should check the source code and license before mounting.