paper-cluster-by-theme Take a list of relevance-filtered papers and produce thematic clusters that the synthesis layer can write about rather than list . A "cluster" here is not a topic label — it's an argument. "Diffusion models for protein design" is a topic. "Diffusion models are converging on AlphaFold-comparable accuracy without MSAs" is a theme. The synthesis is much stronger when clusters describe what the papers collectively argue . Workflow Step 1 — Read inputs The skill takes a list of records (the KEEP set from ). It needs , , , and for each. Step 2 — Candidate themes Two signals t…