DeepSeek Harness Plugin: dsh-super-pm - Super PM Product Thinking Skill Packaging and Distribution

`dsh-super-pm` is a standard DeepSeek Harness (DSH) plugin designed to address the issue of AI treating assumptions as facts. It encapsulates the Super PM product-thinking methodology as a tool, helping developers converge vague ideas into verifiable directions by distinguishing facts from assumptions and prioritizing negative boundaries. The plugin supports decision consolidation, project status management, and PRD generation, requires installation via command, and relies on the DSH file system for interaction; all save operations require user confirmation.