ci: Integrate Warden for AI-powered PR code review

[antonis]

📢 Type of change

• Bugfix
• New feature
• Enhancement
• Refactoring

📜 Description

Adds warden.toml at the repo root to enable Warden AI-powered PR reviews. The org-wide workflow in getsentry/.github already runs Warden on all repos — this config file activates it for sentry-react-native.

Skills enabled:

• code-review — AI code review
• find-bugs — bug detection
• security-review — security analysis
• gha-security-review — GitHub Actions security review

Also adds the warden skill to agents.toml for local agent usage.

💡 Motivation and Context

Per the SDK Review and CI standards, SDK repositories should have Warden configured in CI.

Closes RN-585

💚 How did you test it?

Warden ran successfully on this PR via the org-wide workflow. All 4 skills completed with zero findings

📝 Checklist

• I added tests to verify changes
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled
• I updated the docs if needed.
• I updated the wizard if needed.
• All tests passing
• No breaking changes

🔮 Next steps

🤖 Generated with Claude Code

[github-actions]

Semver Impact of This PR

⚪ None (no version bump detected)

📋 Changelog Preview

This is how your changes will appear in the changelog.
Entries from this PR are highlighted with a left border (blockquote style).

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• ci: Integrate Warden for AI-powered PR code review by antonis in #6003

• feat(core): Add GlobalErrorBoundary for non-rendering errors by alwx in #6023
• chore(deps): update CLI to v3.4.0 by github-actions in #6026
• feat: Expose screenshot masking options for error screenshots by antonis in #6007
• fix(replay): Check captureReplay return value in iOS bridge by antonis in #6008
• chore(deps): bump getsentry/craft from 2.25.2 to 2.25.4 by dependabot in #6019
• chore(deps): bump getsentry/craft/.github/workflows/changelog-preview.yml from 2.25.2 to 2.25.4 by dependabot in #6021
• chore(deps): bump github/codeql-action from 4.35.1 to 4.35.2 by dependabot in #6022
• chore(deps): bump actions/setup-node from 6.3.0 to 6.4.0 by dependabot in #6020
• ci(danger): Demote Android SDK version mismatch from fail to warn by antonis in #6018
• chore(deps): update Android SDK to v8.39.1 by github-actions in #6010
• chore(deps): update JavaScript SDK to v10.49.0 by github-actions in #6011
• ci: Integrate Warden for AI-powered PR code review by antonis in #6003
• chore(lint): Fixes lint issue on main by antonis in #6013
• feat(expo): Warn when prebuilt native projects are missing Sentry config by alwx in #5984
• release: 8.8.0 by alwx in 738d7db2
• fix(core): Fix sourcemap upload when withSentry is used programmatically by antonis in #6006
• feat(tracing): Implement strict trace continuation by antonis in #5829
• chore(deps): bump follow-redirects from 1.15.11 to 1.16.0 by dependabot in #6004
• chore: Bump sample app to React Native 0.85.1 by antonis in #5991
• chore(deps): Bump E2E tests to 0.85.1 by antonis in #5990
• Add deeplinkIntegration for automatic deep link breadcrumbs by alwx in #5983
• fix(core): Retry native module resolution to prevent silent event drops by antonis in #5981
• feat(core): Name navigation spans using dispatched action payload by alwx in #5982

Plus 29 more

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_{🤖 This preview updates automatically when you update the PR.}

[github-actions]

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[linear-code]

RN-585 Integrate Warden for AI-powered PR code review