Identity worlds

Use the core generator for stable fictional fixtures in tests, demos, and graph imports:

synthworld generate --seed 20260719 --persona-count 100 --output world.json

Treat the core world as a deterministic smoke surface, not as a transfer claim. Its frozen reference topology is intentionally simple, so use richer generated profiles when graph structure is part of the test.

For current field contracts and benchmark limits, use DATA_DICTIONARY.md and BENCHMARKS.md. Use the documentation site’s evaluation guide for the general adapter and scoring flow.