gpt 5.4 computer use + tool search

[jdchawla29]

Note

Medium Risk
Changes core agent/tool plumbing for both OpenAI and Claude (hosted tool registration, deferred tool loading, and computer-call result formatting), which could affect tool calling behavior across many workflows; also bumps the OpenAI SDK version.

Overview
Updates defaults and docs/examples to newer models (notably gpt-5.4 for OpenAIAgent, plus gpt-5.3-codex in the Codex cookbook/example) and refreshes CLI presets/tests accordingly.

Adds support for provider-hosted tools via native specs (including new ToolSearchTool), passing hosted-tool config through to OpenAI/Claude and enabling automatic defer_loading when tool counts exceed a configured threshold.

Extends OpenAI computer-use support to the GA computer tool: parses computer_call outputs (including batched actions), requires screenshots in computer tool results, and formats them as computer_call_output with acknowledged safety checks; OperatorAgent is simplified to reuse the shared implementation. Also makes CodeExecutionTool optionally supply required OpenAI code_interpreter container config and validates it at agent tool-conversion time.

Improves native spec parsing to merge nested extra fields, expands model allowlists for native shell/apply_patch, and bumps openai dependency to >=2.26.0.

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[jdchawla29]

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