docs: add bosun readiness guidance

[bosun-ai-staging]

Ready to use this repository with the Bosun platform by documenting repository expectations and surfacing the existing Bosun-oriented setup.

Summary

• add AGENTS.md with repository-specific guidance for structure, commands, testing, and pull request expectations
• confirm the repository already includes Bosun configuration in .bosun/config.toml
• note the local/runtime services that should be verified before use

Bosun readiness

This repository appears ready to run with Bosun based on the existing configuration and setup files:

• .bosun/config.toml defines a setup script and test environment variables
• Bosun services are configured for:
  • postgres
  • redis
• the application also includes local development service definitions in docker-compose.yml

Service check

If you plan to use this through Bosun, please verify that the configured services match your expected environment:

• postgres settings are correct for your workflow
• redis settings are correct for your workflow
• required environment variables from README.md are available
• any local/deployment-specific overrides still reflect the intended setup

Notes

Relevant files:

• AGENTS.md
• .bosun/config.toml
• README.md
• docker-compose.yml
• Procfile.dev

Testing

• not run; documentation-only change

Created by Bosun task run: 5ef2da87-9f57-46d8-8612-715927f54ba5.

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This pull request is created by bosun, a code maintenance automation platform. For more information, visit bosun.ai.