Purpose: define how a .settings scenario becomes an analysis unit.

Related artifacts: analysis/data/features.csv, analysis/data/features_normalized.csv.

1. Parse each .settings file.
2. Extract a fixed descriptor vector (full-46 features).
3. Build reduced analysis spaces (core23, reduced17).
4. Normalize per feature (NaN-aware policy).
5. Compare scenarios in descriptor space and output space.

It decouples scenario analysis from narrative labels and enables reproducible quantitative diversity checks.