core: migrate standalone web search to extension-owned turn items#31525
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pakrym-oai
approved these changes
Jul 8, 2026
sayan-oai
approved these changes
Jul 8, 2026
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Description
This PR migrates standalone web search onto the extension-owned turn-item path introduced in #31283.
Standalone web search now emits
ExtensionItem::WebSearchthrough genericTurnItem::Extension, while app-server still exposes the existing typedThreadItem::WebSearchJSON shape. Hosted Responses API web search stays on core-ownedTurnItem::WebSearch.What changed
web_search::WebSearchItemandWebSearchActiontocodex-extension-itemsunder the stableweb.searchkind.ExtensionTurnItemto generic{ item, legacy_events }now that no typed extension special cases remain.WebSearchBegin/WebSearchEndcompatibility events and canonical-first ordering.