DeepSeek Harness Long-Term Memory Plugin: dsh-unified-memory

`dsh-unified-memory` is a plugin that provides low-cost long-term memory for DeepSeek Harness. It uses SQLite full-text indexing to retrieve memories stored in local Markdown files only when needed, avoiding the need to load the entire memory store into the context and thereby saving tokens. The plugin supports three working modes: `dsh` (standalone storage), `overlay` (reads Claude Code memories), and `shared` (shares memories with Claude Code). After installation, users can switch modes using the `mem mode` command. All data is fully local, with no network requests, making it suitable for scenarios with limited context windows or long-running agent tasks. Users should be aware of environment dependencies and privacy concerns related to plaintext storage.