chore(review): activate Codex auth epoch 6

[777genius]

Activates the fresh generation-aware Codex OAuth namespace for the new immutable ReviewRouter runtime. No auth payload is committed.

Summary by CodeRabbit

• Chores
  • Rotated the authentication credentials used by automated code review workflows.
  • Updated related workflow references while preserving existing triggers, permissions, and job behavior.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: b1df7551-17ed-485f-877e-49e2ec43c1b5

📥 Commits

Reviewing files that changed from the base of the PR and between 454ddcd and 5f985fd.

📒 Files selected for processing (1)

• .github/workflows/reviewrouter-codex.yml

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📝 Walkthrough

Walkthrough

The Codex review workflow rotates its OAuth authentication references from epoch 5 to epoch 6. The workflow name, reusable workflow secret, and refresh-job secret input now use the new namespace and secret identifier.

Changes

Codex OAuth rotation

Layer / File(s)	Summary
Rotate Codex workflow secrets .github/workflows/reviewrouter-codex.yml	The workflow name and Codex authentication secret references now use epoch 6, namespace sns_9a50d90d72d37b99be67b2f430987351, and the corresponding E6 secret suffix.

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

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/reviewrouter-auth-epoch-6

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