dsh-snippets: Minimalist Snippet/Command Toolbox for DeepSeek Harness

`dsh-snippets` is a lightweight memory plugin for DeepSeek Harness (DSH), designed to address the cumbersome copy-paste workflow for frequently used snippets. It relies on local JSONL file storage, with no database or UI dependency, and implements explicit memory through five semantic tools: saving, searching, retrieving, deleting, and statistics. It supports storing commands, code, or prompts, is fault-tolerant, and is well suited for developers and operations personnel who need to reuse specific content frequently.