~x-ai/grok-latest → B (1:3)

B delivers lasting architectural value by offloading Reddit entity JSON from in-memory GlobalTree into a RocksDB-backed EntityStore and replacing full event-log loads with line-at-a-time replay, directly cutting startup RAM; A is a solid but narrower UX/parser improvement (deterministic BlockMasker tokens, prose ItemRef tokenization, braced body enforcement) that mainly extends garden linkify behavior.