dsh-raven-research: A Source-Oriented Deep Research Plugin for DeepSeek Harness

`dsh-raven-research` is a DeepSeek Harness (DSH) plugin developed by wxxb789, designed to address limitations in traditional long-running agents, including low evidence awareness, unreliable citations, and difficulty steering during execution. The plugin provides progressive task abstraction, adjustable checkpoints, rigorous citation validation, and structured writing tools. It supports natural mid-run directional guidance without restarting the task, making it suitable for deep research, academic writing, and complex decision analysis. As a v1 developer preview, it must be built and installed from source.