ci: switch PR review policy to CodeRabbit

[SergeSerb2]

What Changed

• Add a root .coderabbit.yaml that explicitly enables CodeRabbit automatic reviews and review status checks.
• Remove the old .github/workflows/codex-review-gate.yml workflow that waited for Codex review signals.

Why

Codex PR review is turned off to avoid using ChatGPT limits. The live protect-main ruleset has already been updated to require CodeRabbit's native CodeRabbit status from the CodeRabbit GitHub App instead of codex-review-required.

Validation

• ./node_modules/.bin/vp check
• ./node_modules/.bin/vp run typecheck
• YAML parse check for .coderabbit.yaml
• git diff --check

Summary by CodeRabbit

• New Features

  • Enabled automated review status reporting and auto-review behavior.
  • Added automatic chat replies for review-related interactions.

• Chores

  • Removed a PR review gate workflow, simplifying review checks during pull requests.

[coderabbitai]

📝 Walkthrough

Walkthrough

Updates .coderabbit.yaml to enable review status reporting, auto-review (drafts disabled), and chat auto-replies. Removes the .github/workflows/codex-review-gate.yml workflow that previously enforced presence of a Codex review before allowing PRs to proceed.

Changes

Configuration Updates

Layer / File(s)	Summary
CodeRabbit review settings .coderabbit.yaml	Enables reviews.review_status, reviews.auto_review.enabled (drafts disabled), and chat.auto_reply.
Codex review gate removal .github/workflows/codex-review-gate.yml	Removes the workflow job that polled for Codex review verdicts and blocked PRs lacking one.

Estimated code review effort: 1 (Trivial) | ~3 minutes

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description covers what changed and why, but it omits the required checklist section from the template.	Add the checklist items and include or explicitly remove the UI Changes section per the template.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title is concise and accurately summarizes the main change to switch PR review policy to CodeRabbit.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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)

• Create PR with unit tests
• Commit unit tests in branch codex/coderabbit-pr-policy

---

_{Comment @coderabbitai help to get the list of available commands.}

[coderabbitai]

🧹 Nitpick comments (1)

.coderabbit.yaml (1)

1-1: 📐 Maintainability & Code Quality | 🔵 Trivial | 💤 Low value

Optional: add schema reference for editor validation.

Consider adding a # yaml-language-server: $schema=https://coderabbit.ai/integrations/schema.v2.json comment at the top for IDE autocompletion/validation, as seen in other repos' .coderabbit.yaml.

💡 Optional addition

+# yaml-language-server: $schema=https://coderabbit.ai/integrations/schema.v2.json
 reviews:
   review_status: true

🤖 Prompt for AI Agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In @.coderabbit.yaml at line 1, Add the optional YAML schema comment at the top
of the .coderabbit.yaml file so editors can validate and autocomplete the
config. Place the `# yaml-language-server: $schema=...` reference before the
existing `reviews:` key, keeping the rest of the file unchanged.

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Nitpick comments:
In @.coderabbit.yaml:
- Line 1: Add the optional YAML schema comment at the top of the
.coderabbit.yaml file so editors can validate and autocomplete the config. Place
the `# yaml-language-server: $schema=...` reference before the existing
`reviews:` key, keeping the rest of the file unchanged.

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: ad3cacb8-aafb-43e5-803b-09b4d8d0438c

📥 Commits

Reviewing files that changed from the base of the PR and between e45e021 and 0667b1d.

📒 Files selected for processing (2)

• .coderabbit.yaml
• .github/workflows/codex-review-gate.yml

💤 Files with no reviewable changes (1)

• .github/workflows/codex-review-gate.yml