The inflight-turn journal can outlive the turn it recorded (reclaim,
reconnect or restart races skip the settle that clears it). On session
resume the fold then re-appends journaled assistant rows to a transcript
that already holds the committed replies, so the conversation ends with
duplicate answers in scrambled order. The fold also carried the stale
entry's streamId onto the resumed state on an idle resume, which kept the
journal entry alive (persistInFlightTurnState only clears when streamId is
null) and re-folded the same tail on every open.
Detect text-level staleness before the append path: when every recoverable
journaled assistant row already exists as committed text in the base
transcript, treat the entry as caught up and clear it. Only keep a stream
target when the resumed session is genuinely running (keepPending), so an
idle resume self-heals instead of re-folding.
Nicolas Formenton
9184915c42