Class BeliefStoreApi

Drop a persisted record (mirrors the mixin's forget).

Final flush of every learned record, then clear the in-memory map. Called on logout (onDestruct). The flush is a backstop for any write-through still in flight; clearing releases the working set.

Lazy-hydrate viewer's persisted beliefs into its in-memory map. Called on session establish (Avatar.enter). No-op without a durable viewer key or an active connection.

Per-record write-through. Persists a learned record (upsert keyed by {viewerId, realm, referent}); no-ops for a bare stranger record, a keyless viewer, or a closed connection. Fire-and-forget from the mixin's sync know/forget.