The projection cache read-only face (cachedSnapshot, cachedPredecessorTitle) now matches the lifecycle identity a header witnesses (formatVersion, createdAt, cwd, isSeeded) and serves its rows as a cached block with asOfSeq -1. The fold face (hydratePrepared, write, coldSnapshot) keeps the full identity including the inherited cut. The session list and @ completion drop their isSeeded guards, so forked sessions keep their cached title and list metadata across a Host restart; list-children keeps its body fallback.