Main turns now set prompt_cache_key to the session/conv id. Responses already sent that via the conv-id fallback; Chat Completions now puts the same value in `user`. Recap and /btw keep sharing the parent session key — not an agent-scoped suffix.
Main turns now set prompt_cache_key to the session/conv id. Responses already sent that via the conv-id fallback; Chat Completions now puts the same value in `user`. Recap and /btw keep sharing the parent session key — not an agent-scoped suffix.