Add AGENTS.md and tell agents to use .cursor/skills

[adinauer]

#skip-changelog

📜 Description

Add AGENTS.md and tell agents to use .cursor/skills

Had to be worded rather strictly or otherwise Claude would simply ignore the instructions to both read AGENTS.md or cursor skills.

💡 Motivation and Context

💚 How did you test it?

📝 Checklist

• I added GH Issue ID & Linear ID
• I added tests to verify the 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.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.
• No breaking change for hybrid SDKs or communicated to hybrid SDKs.

🔮 Next steps

[github-actions]

Semver Impact of This PR

⚪ None (no version bump detected)

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[github-actions]

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📖	Do not forget to update Sentry-docs with your feature once the pull request gets approved.

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[adinauer]

Could in theory symlink this to AGENTS.md but that might cause problems for Windows contributors.

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

^{Bugbot Autofix is OFF. To automatically fix reported issues with Cloud Agents, enable Autofix in the Cursor dashboard.}

[cursor]

Duplicated content between AGENTS.md and coding.mdc

Low Severity

AGENTS.md instructs agents to read .cursor/rules/coding.mdc as a required first step, but then repeats nearly all of coding.mdc's content inline — build commands, contributing guidelines, coding workflow rules, and useful resources are duplicated verbatim. This creates a maintenance risk where the two copies can drift out of sync, leading to conflicting instructions for agents. The duplicated sections in AGENTS.md could reference coding.mdc instead of repeating its content.

Additional Locations (1)

• AGENTS.md#L6-L9