~x-ai/grok-latest → A (8:1)

Commit A makes a lasting architectural change: drops EntityImported/EntityStore so the event log keeps only NodeEnsured structure, writes Reddit display content ephemerally into the projection with fetched_at, and adds a 48h TTL evictor—aligning storage with API policy and rebuild semantics. Commit B is an init dump of notes (.tdsl), shell-cat noise pasted into .rs files, and large prototype blobs (parser/reducer/ranking) that do not land as clean, integrated project value.