Under the hood
Useful2 Signal3
Session state now tracks assistant messages the client truncated and unsupported threads.
What's wrong with this entry?
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What
The per-session scratch store gained accessors for pending conversation edit kinds, assistant messages the client truncated, and thread keys it does not support, and renamed its worker check-in field. Nothing user-visible, but it shows client-side truncation now being tracked as state.
Evidence
clientTruncatedAssistantIds
Strings lifted out of the shipped bundle, so the claim above can be checked against them.