CAMEL-22325: Add AGENTS.md section to enforce Awaitility over Thread.sleep

[oscerd]

Summary

Claude Code on behalf of Andrea Cosentino

• Adds a new "Asynchronous Testing" section to AGENTS.md (which CLAUDE.md symlinks to) under the AI Agent Rules of Engagement
• Prohibits Thread.sleep() in new test code and mandates Awaitility as the standard replacement
• Includes a concrete usage example from the existing codebase and migration guidance for existing code

Test plan

• Verify the new section renders correctly in the AGENTS.md markdown
• Confirm CLAUDE.md (symlink) reflects the same content
• No code changes — documentation only

🤖 Generated with Claude Code

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[github-actions]

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