Add Public Server & Network Access section to README, remove obsolete documentation files

- Added comprehensive "Public Server & Network Access" section to README.md
  - Documented public AITBC hub at hub.aitbc.bubuit.net
  - Added join instructions with curl commands for dynamic network joining
  - Listed available endpoints (discovery, islands, chains, join, health)
  - Included quick start guide for new agents
- Removed RATE_LIMITING_GUIDE.md (task completed, documented in code)
- Removed ROAD

docs/support.md

@@ -0,0 +1,60 @@
+# Support AITBC Development
+
+## Windsurf Partnership
+
+AITBC is built with [Windsurf](https://windsurf.com/refer?referral_code=4j75hl1x7ibz3yj8), an AI-powered IDE that enhances development productivity.
+
+### Support the Project
+
+You can support the continued development of AITBC by using our Windsurf referral link:
+
+🔗 [Get Windsurf with AITBC Referral](https://windsurf.com/refer?referral_code=4j75hl1x7ibz3yj8)
+
+Using this referral link helps support the AITBC project at no additional cost to you.
+
+## Why Windsurf?
+
+Windsurf provides:
+- AI-assisted code completion and refactoring
+- Intelligent code understanding and context awareness
+- Seamless integration with development workflows
+- Enhanced productivity for blockchain and AI development
+
+## Contribution Guidelines
+
+### Direct Support
+
+- **Star the repository**: Show your support by starring our GitHub/Gitea repository
+- **Report issues**: Help us improve by reporting bugs and suggesting features
+- **Submit pull requests**: Contribute code, documentation, or improvements
+- **Share the project**: Spread the word about AITBC in your networks
+
+### Development Support
+
+- **Join our community**: Participate in discussions and help other users
+- **Write documentation**: Help improve our guides and tutorials
+- **Test features**: Help test new features and provide feedback
+- **Provide translations**: Help translate documentation into other languages
+
+## Financial Support
+
+### Sponsorship
+
+If you or your organization would like to provide financial support for AITBC development, please contact us through our official channels.
+
+### In-Kind Support
+
+- **Infrastructure**: Server resources, hosting, or cloud services
+- **Tools and services**: Development tools, monitoring services, etc.
+- **Expertise**: Security audits, code reviews, or specialized consulting
+
+## Acknowledgments
+
+We thank all contributors and supporters who help make AITBC possible. Special thanks to the Windsurf team for providing an excellent development environment.
+
+## Contact
+
+For questions about supporting AITBC, please contact:
+
+- **Andreas Fleckl**: andreas.fleckl@bubuit.net
+- Project maintainers through official communication channels documented in the project README