dsh-memory-panel: DeepSeek Harness Long-Term Memory Tool and Visualization Panel

`dsh-memory-panel` is a memory management plugin for DeepSeek Harness (DSH), designed to address context loss after Agent session resets. It provides a set of tools (such as `memory_save` and `memory_recall`) and a visualization panel, supporting memory storage, retrieval, deletion, and category-based filtering. The plugin stores memories in plaintext at `~/.dsh/memory.json` and includes safety mechanisms such as atomic writes, a concurrency queue, automatic backup upon corruption, and growth control. Users can install it via command line and use it after restarting the service. Note that its API currently lacks authentication protection, so storing sensitive data in plaintext is not recommended.