OptionalblocksOptionalgenerationTrue when seed was part of the client request rather than generated
by the server.
OptionalminimumWhether every serialized cache can trim (derived from kinds+state at store/scan time). An untrimmable entry (wrapped ring, SSM) can only seed prompts it matches WITHOUT a trim — find() must not prefer it over a shorter usable one (the 2026-07-06 restart-0 defect: the [prompt+gen] file always won, always got rejected after restore).
Actual sampler seed, including a server-generated default. Required to continue the random stream exactly after a restart.