~x-ai/grok-latest → B (1:4)

B delivers lasting infrastructure value by vendoring a RocksDB-backed durable collections crate, moving heavy Reddit entity JSON out of the in-memory GlobalTree into entity_db, and replacing load-all event replay with line-at-a-time streaming to cut startup RAM. A is a useful but narrower CLI reshape (ingest → scoped forum post/list/show, docs/tests updates) that mostly reorganizes the command surface without comparable core durability or scalability impact.