- Integrate `rs/zerolog` for structured and leveled logging
- Add `EZ_LOG_LEVEL` environment variable support (default: info)
- Configure console output with timestamps and service fields
- Migrate `main.go` and `LogWriter` to use the new logger instance
- Update README with logging configuration and design details
- Move integration tests and mock upstream resources from `integration/` to `test/` directory.
- Add `test/integration.sh` script to orchestrate environment setup and test execution.
- Update build context in `docker-compose.integration.yml` to match new structure.
- Add documentation for local development and integration testing workflows in README.
Replace placeholder with comprehensive documentation including:
- System goals and control plane responsibilities
- Architecture design and technology stack
- API endpoint reference for management and system interfaces
- Configuration variables and default values
- Deployment instructions for local and Docker environments
