The walkers endpoint

The first real endpoint

Time to serve data. In the iOS app, the walker list screen fetched GET /walkers and got back JSON. Now you build the other end of that call.

The pattern for every endpoint in this service is the same: a handler struct holds its dependencies (here, a repository that knows how to fetch walkers), and each route is a method on that struct. Bundling the dependency into the struct means the handler never reaches for globals — everything it needs is a field.