3.25.0 (2026-10-06) Features agents: observe local tool failures (#4028) (95d9645) agents: run local tools during streamed session creation (#4027) (919b623) api: add agent turn items and usage source grouping (#4030) (bd74c4e) lib: export type_to_response_format_param publicly (#2993) (becc1d2) tools: support tool search (defer_loading=true) in typed function helpers (#4029) (eec627f)