- Create examples/ directory with four sample applications
- hello_responder.ml: Simple "Hello World" FastCGI Responder
- echo_responder.ml: Echo server displaying request information
- simple_authorizer.ml: Path-based authorization server
- basic_filter.ml: Text filter converting input to uppercase
- Update interface types to be compatible with Eio's actual types
- Fix TCP address type from Sockaddr to string for simplicity
- All examples type-check successfully against interfaces
- Expected linking errors confirm readiness for implementation phase

This completes STEP 2: sample binaries successfully demonstrate the API design
and prove the interfaces are usable for real applications.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>