Add native cursor-review XL mode

[synap5e]

Summary

• add cursor-review-xl as a standalone trigger for the reusable Cursor Review workflow
• bypass only the diff-size cap in XL mode while preserving exclusions, line-count reporting, idempotency, and failure handling
• make XL win when both review labels are present
• centralize concurrency so XL replaces an in-flight standard panel without unrelated label events cancelling reviews
• document the trigger and update retry guidance for either active review label

Why

Large-review behavior belongs in the reusable workflow so consumers keep thin callers and do not need to duplicate trigger or concurrency expressions.

Validation

• python3 -m unittest discover -s .github/cursor-review/tests -p 'test_*.py' -v (40 tests)
• actionlint .github/workflows/cursor-review.yml
• git diff --check
• exercised the embedded trigger gate across 11 standard, XL, both-label, skip-removal, unrelated-label, removal, and label-free event cases

Rollout

After merge, consumers create the cursor-review-xl label and update their pinned reusable-workflow SHA.

[coderabbitai]

Important

Review skipped

Draft detected.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: d5b3c5db-004f-4d67-90b0-55ec033fdde8

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch agent/cursor-review-xl

✨ Simplify code

• Create PR with simplified code
• Commit simplified code in branch agent/cursor-review-xl

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