DeepSeek Harness Plugin: sleetdrop/dsh-plugin-topology

`sleetdrop/dsh-plugin-topology` is a plugin dependency checker for DeepSeek Harness. The tool captures snapshots of the Cordis plugin fiber tree, computes graph-theoretic metrics (such as in-degree and centrality), and provides a visualization panel along with export functionality in multiple formats (JSON, Graphviz, and SVG) to help developers diagnose complex dependencies and circular dependency issues. The plugin is maintained independently, so version compatibility and its reliance on internal structures require attention.