* Preserve iOS chat activity on foreground refresh
Show an activity indicator when foreground history reports session activity without a chat in-flight snapshot, while keeping unanswered turns blocked and clearing the fallback state on answers, terminal events, session changes, and timeout.
* fix(ios): preserve foreground run ownership
* chore(ios): sync native string inventory
* chore: keep release changelog owned
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Co-authored-by: Your Name <you@example.com>
Co-authored-by: Peter Steinberger <steipete@gmail.com>
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