test: add comprehensive tests for new modules

[rishitank]

Summary

Add comprehensive tests for all 9 new modules that were created to improve AnimaWatch's debugging capabilities.

New Test Files (99 tests)

File	Tests	Coverage
test_models.py	9	Severity, IssueCategory, BoundingBox, Finding, AnalysisResult, AnalysisMetadata
test_cache.py	11	Async get/set, TTL expiration, max size eviction, hash_file
test_devices.py	16	DeviceProfile, DEVICES dict, get_device(), list_devices()
test_diff.py	8	compare_images(), DiffRegion, batch comparison
test_fps.py	7	FPSAnalysisResult, JankEvent, generate_fps_report()
test_frames.py	5	ExtractedFrame, FrameExtractionResult, cleanup
test_consensus.py	12	ConsensusResult, _findings_similar(), _max_severity()
test_grounding.py	13	GroundedFinding, VerificationResult, parse_bounding_box()
test_metrics.py	12	CoreWebVitals, rate_metric(), generate_metrics_report()

Test Results

======================= 149 passed, 11 warnings in 1.18s =======================

Checklist

• All 149 tests pass
• Lint (ruff) passes
• Type check (mypy) passes
• Format (ruff format) applied

---

Pull Request opened by Augment Code with guidance from the PR author

[coderabbitai]

Warning

Rate limit exceeded

@rishitank has exceeded the limit for the number of commits that can be reviewed per hour. Please wait 15 minutes and 1 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.

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch feature/add-tests-and-mcp-integration

---

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.}