chore: add Sentinel Gate workflow

[jordanpartridge]

Summary

• Replace ci.yml with synapse-sentinel/gate action
• Enable auto-merge on certification
• Update README badge to Sentinel Certified

Changes

• gate.yml: Unified quality gate (tests, coverage, security, syntax)
• auto-merge: PRs automatically merge when certified
• 100% coverage: Matches existing ci.yml requirement
• README: Badge now shows Sentinel Certified status

Gate Features

• ✅ Tests & Coverage (100% threshold)
• ✅ Security Audit
• ✅ Pest Syntax (describe/it blocks)
• ✅ Auto-merge on pass

[coderabbitai]

Warning

Rate limit exceeded

@jordanpartridge has exceeded the limit for the number of commits or files that can be reviewed per hour. Please wait 5 minutes and 45 seconds before requesting another review.

⌛ How to resolve this issue?

After the wait time has elapsed, a review can be triggered using the @coderabbitai review command as a PR comment. Alternatively, push new commits to this PR.

We recommend that you space out your commits to avoid hitting the rate limit.

🚦 How do rate limits work?

CodeRabbit enforces hourly rate limits for each developer per organization.

Our paid plans have higher rate limits than the trial, open-source and free plans. In all cases, we re-allow further reviews after a brief timeout.

Please see our FAQ for further information.

📥 Commits

Reviewing files that changed from the base of the PR and between 0fe3e85 and 8f9f599.

📒 Files selected for processing (3)

• .github/workflows/ci.yml (0 hunks)
• .github/workflows/gate.yml (1 hunks)
• README.md (1 hunks)

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch chore/add-gate-workflow

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

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