Add knowledge graph reproducibility routes

[2bf]

Summary

• Adds a self-contained knowledge graph reproducibility route planner for issue Scientific Knowledge Graph Integration #17.
• Scores graph paths across concepts, protocols, datasets, notebooks, software, and results using evidence strength, citation count, freshness, access, executable metadata, and reproducibility verification.
• Emits ranked route packets, blocker labels, curator actions, stable audit digests, and recommendation digests for project sidebars or entity pages.
• Includes a short MP4 demo artifact at knowledge-graph-reproducibility-routes/demo.mp4.

Validation

• node knowledge-graph-reproducibility-routes/test.js
• node knowledge-graph-reproducibility-routes/demo.js
• ffprobe -v error -show_entries format=duration,size -show_entries stream=width,height,codec_name -of default=noprint_wrappers=1 knowledge-graph-reproducibility-routes/demo.mp4

/claim #17

Built with AI assistance; reviewed and tested before submission.