zatrano/examples ? reverse-engineered prompt

Build me the reference example for ZATRANO as a standalone Go app, not the framework itself.

I want a production shaped HTTP API that shows how someone would use the framework in a real project, with config loading, providers, app lifecycle hooks, a background worker, and a readiness check endpoint. It should be its own Go module under the reference folder and be runnable from a command like serve.

Please make it something I can test and run locally, with clear startup and shutdown behavior, and enough structure to show how an external developer would organize a small service around the framework. If you need to check the current framework docs online to match the expected usage, go ahead and do that.