ci: compare Agents SDK type errors against PR base

[jbeckwith-oai]

Summary\n\n- run the Agents SDK type check against the PR base and proposed SDK in isolated checkouts\n- fail when the proposed SDK introduces a new mypy diagnostic\n- keep unexpected checker failures fatal instead of treating them as existing incompatibilities\n\nThis fixes the false failure blocking #3601 without hiding future regressions. The current base and the unrelated release PR #3600 both reproduce the same eight HTTPX/HTTPX2 diagnostics.\n\n## Validation\n\n- \n- parsed the workflow as YAML\n- ran the full base/head installation and type-check comparison locally; both sides reproduced the same eight diagnostics and the comparison passed\n- thermo-nuclear quality review: no blockers

[openai-sdks]

OkTest Summary

✅ 237/237 SDK tests passed in 11.549s for Python SDK PR #3603.

Test results — 42 files

Test	Result	Time
tests/chat-completions-complex-body.test.ts	✅ Passed	169ms
tests/chat-completions-create.test.ts	✅ Passed	247ms
tests/chat-completions-stream.test.ts	✅ Passed	133ms
tests/files-content-binary.test.ts	✅ Passed	222ms
tests/files-create-multipart.test.ts	✅ Passed	266ms
tests/files-list-pagination.test.ts	✅ Passed	155ms
tests/initialize-config.test.ts	✅ Passed	207ms
tests/instance-isolation.test.ts	✅ Passed	198ms
tests/models-list.test.ts	✅ Passed	154ms
tests/responses-background-lifecycle.test.ts	✅ Passed	220ms
tests/responses-body-method-errors.test.ts	✅ Passed	319ms
tests/responses-cancel-timeout.test.ts	✅ Passed	193ms
tests/responses-cancel.test.ts	✅ Passed	237ms
tests/responses-compact-retries.test.ts	✅ Passed	297ms
tests/responses-compact.test.ts	✅ Passed	230ms
tests/responses-create-advanced-stream.test.ts	✅ Passed	133ms
tests/responses-create-advanced.test.ts	✅ Passed	312ms
tests/responses-create-disconnect.test.ts	✅ Passed	1.411s
tests/responses-create-errors.test.ts	✅ Passed	204ms
tests/responses-create-malformed-api-responses.test.ts	✅ Passed	236ms
tests/responses-create-retries.test.ts	✅ Passed	244ms
tests/responses-create-stream-failures.test.ts	✅ Passed	139ms
tests/responses-create-stream-timeout.test.ts	✅ Passed	238ms
tests/responses-create-stream-wire.test.ts	✅ Passed	3.807s
tests/responses-create-stream.test.ts	✅ Passed	312ms
tests/responses-create-terminal-states.test.ts	✅ Passed	234ms
tests/responses-create-timeout.test.ts	✅ Passed	225ms
tests/responses-create.test.ts	✅ Passed	346ms
tests/responses-delete.test.ts	✅ Passed	228ms
tests/responses-input-items-errors.test.ts	✅ Passed	333ms
tests/responses-input-items-list.test.ts	✅ Passed	312ms
tests/responses-input-items-options.test.ts	✅ Passed	306ms
tests/responses-input-tokens-count-timeout.test.ts	✅ Passed	249ms
tests/responses-input-tokens-count.test.ts	✅ Passed	225ms
tests/responses-malformed-inputs.test.ts	✅ Passed	2.958s
tests/responses-not-found-errors.test.ts	✅ Passed	280ms
tests/responses-parse.test.ts	✅ Passed	384ms
tests/responses-retrieve-retries.test.ts	✅ Passed	347ms
tests/responses-retrieve.test.ts	✅ Passed	325ms
tests/responses-stored-method-errors.test.ts	✅ Passed	594ms
tests/retry-behavior.test.ts	✅ Passed	3.2s
tests/sdk-error-shape.test.ts	✅ Passed	278ms

View OkTest run #31629559572

_{SDK merge (18519f3776a8) · head (e54cde7d516f) · base (a1eeab58db02) · OkTest (a845fa206fa4)}

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 7d199f5929

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".