ci: prepare checks for merge queue

[jbeckwith-oai]

Summary

• trigger the required CI workflow for GitHub merge-group checks
• allow the aggregate ci / ci-required job to run for queued merge commits

Why

GitHub requires Actions-based required checks to listen for the separate merge_group event. Without this change, enabling the queue would leave queued pull requests waiting for a required check that never reports.

Impact

Once the repository merge queue is enabled, CI will run again when an approved pull request enters the queue, validating it against the latest main and any changes ahead of it in the queue. The Stainless staging artifact path remains unchanged.

Validation

• YAML parsed successfully
• git diff --check
• trigger/job-gate alignment check
• thermo-nuclear code-quality review (no findings)

Follow-up

After this lands, enable the main ruleset merge queue with squash-only merging, all-green grouping, one PR per merge, five concurrent builds, and a 60-minute check timeout.

[Copilot]

Pull request overview

This PR updates the repository’s CI workflow so GitHub’s merge queue (merge-group) can trigger the required Actions checks, ensuring queued merge commits report the required status checks instead of waiting indefinitely.

Changes:

• Add merge_group (checks_requested) as a workflow trigger.
• Update the workflow job gate to allow CI to run when invoked by the merge_group event.

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[openai-sdks]

OkTest Summary

✅ 237/237 SDK tests passed in 9.149s for Ruby SDK PR #332.

Test results — 42 files

Test	Result	Time
tests/chat-completions-complex-body.test.ts	✅ Passed	177ms
tests/chat-completions-create.test.ts	✅ Passed	257ms
tests/chat-completions-stream.test.ts	✅ Passed	138ms
tests/files-content-binary.test.ts	✅ Passed	288ms
tests/files-create-multipart.test.ts	✅ Passed	305ms
tests/files-list-pagination.test.ts	✅ Passed	195ms
tests/initialize-config.test.ts	✅ Passed	181ms
tests/instance-isolation.test.ts	✅ Passed	271ms
tests/models-list.test.ts	✅ Passed	250ms
tests/responses-background-lifecycle.test.ts	✅ Passed	246ms
tests/responses-body-method-errors.test.ts	✅ Passed	493ms
tests/responses-cancel-timeout.test.ts	✅ Passed	224ms
tests/responses-cancel.test.ts	✅ Passed	254ms
tests/responses-compact-retries.test.ts	✅ Passed	280ms
tests/responses-compact.test.ts	✅ Passed	274ms
tests/responses-create-advanced-stream.test.ts	✅ Passed	157ms
tests/responses-create-advanced.test.ts	✅ Passed	209ms
tests/responses-create-disconnect.test.ts	✅ Passed	166ms
tests/responses-create-errors.test.ts	✅ Passed	284ms
tests/responses-create-malformed-api-responses.test.ts	✅ Passed	150ms
tests/responses-create-retries.test.ts	✅ Passed	282ms
tests/responses-create-stream-failures.test.ts	✅ Passed	154ms
tests/responses-create-stream-timeout.test.ts	✅ Passed	225ms
tests/responses-create-stream-wire.test.ts	✅ Passed	2.057s
tests/responses-create-stream.test.ts	✅ Passed	112ms
tests/responses-create-terminal-states.test.ts	✅ Passed	274ms
tests/responses-create-timeout.test.ts	✅ Passed	233ms
tests/responses-create.test.ts	✅ Passed	319ms
tests/responses-delete.test.ts	✅ Passed	293ms
tests/responses-input-items-errors.test.ts	✅ Passed	207ms
tests/responses-input-items-list.test.ts	✅ Passed	205ms
tests/responses-input-items-options.test.ts	✅ Passed	281ms
tests/responses-input-tokens-count-timeout.test.ts	✅ Passed	265ms
tests/responses-input-tokens-count.test.ts	✅ Passed	250ms
tests/responses-malformed-inputs.test.ts	✅ Passed	2.244s
tests/responses-not-found-errors.test.ts	✅ Passed	354ms
tests/responses-parse.test.ts	✅ Passed	206ms
tests/responses-retrieve-retries.test.ts	✅ Passed	252ms
tests/responses-retrieve.test.ts	✅ Passed	264ms
tests/responses-stored-method-errors.test.ts	✅ Passed	727ms
tests/retry-behavior.test.ts	✅ Passed	2.004s
tests/sdk-error-shape.test.ts	✅ Passed	402ms

View OkTest run #30852021672

_{SDK merge (c13b6e19e3f9) · head (c4a1f3215fe6) · base (a602a553282c) · OkTest (91635c6a2723)}

[HAYDEN-OAI]

One substantive merge-queue correctness issue identified: queue-branch push runs can cancel the only workflow run that reports the required merge-group check. Details and remediation are attached inline. The required-check aggregation, current main protections, and existing CodeQL PR/post-merge behavior otherwise match the stated rollout.

[Copilot]

Pull request overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated 1 comment.

[HAYDEN-OAI]

Approved at c4a1f3215fe675b6626d69a194fa5c888e8b4f51. The new !gh-readonly-queue/** exclusion follows the positive ** branch pattern, so queue-ref pushes no longer create a competing run; merge_group: checks_requested remains the authoritative queue run and still produces the required ci / ci-required context. The existing Code Owner review, strict required check, linear-history/deletion/force-push protections, squash-only repository setting, bypass actors, and CodeQL PR/post-merge behavior are preserved.

The remaining Copilot thread is a false positive: GitHub Actions documents that dereferencing an absent context property evaluates to an empty string, not an error (contexts reference); additionally, the openai/openai-ruby repository predicates guard the Stainless-only property accesses. No substantive issues remain.