chore: Add CodeRabbit badge to README

[stofu1234]

Summary

• Add CodeRabbit AI review badge to README.md
• Test PR for verifying CodeRabbit integration

Test plan

• Verify CodeRabbit bot comments on this PR
• Confirm badge renders correctly in README

🤖 Generated with Claude Code

Summary by CodeRabbit

• Documentation
  • Added CodeRabbit AI Review badge to README for visual identification of automated code review integration.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

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📝 Walkthrough

Walkthrough

A CodeRabbit AI Review badge has been added to README.md beneath the title, serving as a visual indicator. This is a documentation-only modification with no functional changes to the codebase.

Changes

Cohort / File(s)	Summary
Documentation Badge README.md	Added CodeRabbit AI Review badge beneath the README title.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

🐰 A badge so shiny, placed with care,
CodeRabbit's mark now floating there,
Above the words where readers peek,
A visual gift for all who seek!
✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The PR title 'chore: Add CodeRabbit badge to README' clearly and concisely summarizes the main change—adding a badge to the README file.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch test/coderabbit-review

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

[Copilot]

Pull request overview

Adds a CodeRabbit AI review badge to the repository README to validate CodeRabbit integration and make the review tooling visible from the project landing page.

Changes:

• Add a CodeRabbit badge near the top of README.md.

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💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.