Add dsh-memory-vault: cross-session memory vault for DeepSeek Harness

## dsh-memory-vault Cross-session memory vault for DeepSeek Harness. - **Repo**: https://github.com/flymysql/dsh-memory - **npm**: https://www.npmjs.com/package/dsh-memory-vault - **Topic**: dsh-plugin - **Category**: productivity / memory ### What it does Three model tools (`memory_remember`, `memory_recall`, `memory_forget`) give agents a persistent second brain: facts, preferences, decisions, and project notes survive across sessions. The most recent entries are injected into every system-prompt assembly, so each session starts already aware of stored context. Records live in a durable storage domain (`dsh_memory`, json backend). A Settings page (记忆库 / Memory) lists, adds, and deletes entries through the harness webServer JSON route. ### Install npm install dsh-memory-vault, then add `{ id: dsh-memory, name: dsh-memory-vault }` to cordis.yml. ### Why it matters Every DSH session starts from zero; this closes the loop on cross-session context — the highest-frequency pain point for agent users. Storage-domain persistence means no file conventions and no sidecar services.