test: validate Codex PR review bootstrap

[robbycochran]

Validation-only documentation change for the merged Codex PR-review bootstrap flow.

This PR intentionally has a small diff so the review run can verify that:

• the caller targets main;
• the reusable workflow is pinned to the bootstrapped harness;
• the Codex path can provision github-review and openai-inference in its ephemeral workspace;
• the review result is published without the legacy OpenCode path.

Summary by CodeRabbit

• Documentation
  • Clarified CI workflow behavior for temporary provider setup during reviews.
  • Documented that local managed workspaces can use preconfigured providers instead.
  • Noted that failed runs upload the limited review directory without exposing credentials.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository: stackrox/harness-openshell/.coderabbit.yaml

Review profile: CHILL

Plan: Enterprise

Run ID: 742c4c0d-4b3b-4a2d-b799-1968797f3c06

📥 Commits

Reviewing files that changed from the base of the PR and between 09b3931 and 1a68527.

📒 Files selected for processing (1)

• scripts/review/README.md

Included review availability: Your plan provides up to 12 included reviews per hour; 10 remain after this review.

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Walkthrough

The review README now documents CI-specific ephemeral Codex provider setup, local use of pre-provisioned providers, and bounded artifact uploads for failed runs without exposing provider credentials.

Changes

Review documentation

Layer / File(s)	Summary
Provider and artifact documentation scripts/review/README.md	Documents ephemeral Codex provider setup for CI, pre-provisioned providers for local workspaces, and bounded review-directory artifact uploads for failed runs.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~2 minutes

Change: Other

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly identifies the validation of the Codex PR review bootstrap, which matches the pull request objectives and documentation changes.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Commit to this branch
• Create a new PR

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