Docker HTTP client

userspace/docker-client provides the userspace.docker.client:client library. It depends only on the runtime's http_client, json, and time modules. Installing this package creates no services, databases, migrations, or Docker connections. The host selects permissions; importing the library grants none.

Declare a dependency on userspace/docker-client and import userspace.docker.client:client to use the client. Calling new may probe Docker; callers should supply their selected socket explicitly. The implementation and method signatures are unchanged from userspace/docker.

The userspace/docker package adds the service, storage and contract layer and depends on this package. Its existing userspace.docker:docker_client library re-exports this client, preserving current imports. There is one implementation. Client protocol tests remain in that package's test harness and are not dependencies of this library package.

Run make check WIPPY=/path/to/wippy for standalone lint and a disposable Unix socket fixture that verifies successful inspection, a Docker 404 response, and a transport failure with no HTTP status. It resolves this package through a local workspace replacement and never accesses a real Docker daemon.