feat(app-server): add optional turn_id to thread/fork#30277
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anp-oai
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Description
This adds stable optional
turnIdsupport tothread/fork. When supplied, the fork copies persisted history through that terminal turn, inclusive, and drops later turns from the new thread.Omitting or passing
nullpreserves the existing full-history fork behavior, including the interruption marker when the stored source history ends mid-turn.Why
We're deprecating
thread/rollbackand this will help certain UX use cases work around it by usingthread/fork+turn_idinstead.