Best possible solution:

Keep the merged warning reporter from #87298, then either close this probe unmerged or update it to a permanent helper-backed/no-warning test if maintainers want one.

Do we have a high-confidence way to reproduce the issue?

Not applicable as a bug reproduction. The PR's expected behavior was confirmed by the CI check-run annotation on the added line.

Is this the best way to solve the issue?

No for landing as-is: the branch is a useful one-off CI probe, but the PR body names the safer final state as using the temp-dir helper once annotation shape is confirmed.

Full review comments:

• [P2] Remove the temporary warning probe before merge — test/scripts/temp-helper-warning-probe.test.ts:8
  The CI annotation has now been observed for this exact line, and the PR body says the probe should be updated to test/helpers/temp-dir.ts after that confirmation. Leaving this bare mkdtempSync test in place would turn the one-off CI probe into permanent test churn that bypasses the testing guide's helper path.
  Confidence: 0.91

Overall correctness: patch is incorrect
Overall confidence: 0.88

AGENTS.md: found and applied where relevant.

Codex review notes: model internal, reasoning high; reviewed against 1db8ab373422.

Label changes:

• add P3: This is a low-risk maintainer test/CI probe with no product runtime impact, but it still needs cleanup before any merge.
• add rating: 🦪 silver shellfish: Overall readiness is 🦪 silver shellfish; proof is 🌊 off-meta tidepool and patch quality is 🦪 silver shellfish.
• add status: ⏳ waiting on author: ClawSweeper has contributor-facing work open and is waiting for author action. Not applicable: Contributor real-behavior proof is not required for this repository-member, maintainer-labeled internal CI probe; the CI annotation proof was inspected directly.

Label justifications:

• P3: This is a low-risk maintainer test/CI probe with no product runtime impact, but it still needs cleanup before any merge.
• rating: 🦪 silver shellfish: Overall readiness is 🦪 silver shellfish; proof is 🌊 off-meta tidepool and patch quality is 🦪 silver shellfish.
• status: ⏳ waiting on author: ClawSweeper has contributor-facing work open and is waiting for author action. Not applicable: Contributor real-behavior proof is not required for this repository-member, maintainer-labeled internal CI probe; the CI annotation proof was inspected directly.

PR surface:

Tests +15. Total +15 across 1 file.

What I checked:

• Protected maintainer PR: The live PR is open, authored by a repository member, and has the protected maintainer label, so this cleanup workflow should not close it automatically. (34fcaa551329)
• Temporary intent in PR body: The PR body says the bare temp-dir test is intentionally shaped to validate the report-only warning and should be updated to use test/helpers/temp-dir.ts after the CI annotation shape is confirmed. (34fcaa551329)
• Probe line: The added test creates the intended bare temp directory with fs.mkdtempSync(path.join(os.tmpdir(), ...)). (test/scripts/temp-helper-warning-probe.test.ts:8, 34fcaa551329)
• CI annotation confirmed: The check-run annotations contain one warning on test/scripts/temp-helper-warning-probe.test.ts:8 with the expected temp-helper warning message. (test/scripts/temp-helper-warning-probe.test.ts:8, 34fcaa551329)
• Reporter behavior on current main: Current main's reporter scans added diff lines, formats GitHub warnings, and emits them in GitHub Actions without failing unless --fail-on-findings is passed. (scripts/report-test-temp-creations.mjs:92, 1db8ab373422)
• Testing guide contract: The testing guide tells new tests to prefer test/helpers/temp-dir.ts, and to use an auditable allow comment when a test intentionally needs a bare temp directory. Public docs: docs/help/testing.md. (docs/help/testing.md:47, 1db8ab373422)

Likely related people:

• hxy91819: Authored the merged helper/report rollout, accepted the warning-only CI risk in the related discussion, and authored this follow-up probe against that exact warning path. (role: rollout owner and recent area contributor; confidence: high; commits: 06431fd99b9e, a0fe4416377c, c17cf68a41c9; files: scripts/report-test-temp-creations.mjs, test/scripts/report-test-temp-creations.test.ts, test/helpers/temp-dir.ts)
• vincentkoc: Blame on the surrounding CI guards shard and earlier temp-helper/check surfaces shows recent adjacent ownership in the test and automation area this probe exercises. (role: adjacent CI/test tooling contributor; confidence: medium; commits: 40093f5a93ed; files: .github/workflows/ci.yml, test/helpers/temp-dir.ts)

• 🦀 challenger crab: rare, exceptional readiness with strong proof, clean implementation, and convincing validation.
• 🦞 diamond lobster: very strong readiness with only minor maintainer review expected.
• 🐚 platinum hermit: good normal PR, likely mergeable with ordinary maintainer review.
• 🦐 gold shrimp: useful signal, but proof or patch confidence is still limited.
• 🦪 silver shellfish: thin signal; proof, validation, or implementation needs work.
• 🧂 unranked krab: not merge-ready because proof is missing/unusable or there are serious correctness or safety concerns.
• 🌊 off-meta tidepool: rating does not apply to this item.

Shiny media proof means a screenshot, video, or linked artifact directly shows the changed behavior. Runtime, network, CSP, and security claims still need visible diagnostics.

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