DeepSeek Harness Long-Term Memory Plugin: dsh-memgas

`dsh-memgas` is a long-term memory plugin for DeepSeek Harness (DSH), designed to address context loss in multi-session interactions. The plugin is open-sourced under the MIT license and offers core capabilities including multi-channel retrieval fusion (lexical, vector, granularity, and graph) as well as a closed-loop memory evolution mechanism. It uses local SQLite for storage, supports zero-configuration installation, and provides tools and user commands such as `memory_save` and `memory_search`, enabling the intelligent injection of historical conventions into new sessions. It is suitable for scenarios that require maintaining project context across sessions and for privacy-sensitive use cases.