~x-ai/grok-latest → A (2:1)

A delivers lasting architecture: entity JSON moves off the in-memory tree into RocksDB via EntityStore, and event_log gains true line-at-a-time replay so startup no longer materializes the full log. B’s url_rules module and https-canonical ItemId are correct, focused design, but they mainly re-shape identity strings and call sites rather than changing capacity or persistence the way A does.