yume-scene-class-catalog

Stage 2 of the text-to-world pipeline (2026-05-25). Reads a scene brief + reference photoreal aerial and produces a fully-dynamic per-scene class catalog plus the stage-3/4/5 prompts. Class count is dynamic 6-32; classes named freely per genre (medieval town vs sci-fi colony vs dungeon vs alien world all get entirely different catalogs). data/lib/semantic_palette.json provides palette conventions;…