markmandel/paddle-soccer ? reverse-engineered prompt

Build me a simple two player online paddle soccer game like this repo describes, with a Unity client and a dedicated game server setup that can run on Kubernetes.

I want players to be able to start a match, get paired quickly, and connect directly to a game server that gets created on demand. Please include the basic backend pieces to manage sessions and matchmaking, plus the logic for the server to register its port so the client can find it. If it makes sense, set it up so the game servers run separately from the backend services and can be scaled independently. Look up current docs online if you need to for Kubernetes or Unity details.

Keep the game itself simple and playable, with two player paddle style controls, a ball, scoring, and a clean way to launch the client and the server builds. If there are any missing pieces in the repo, fill them in so it works as a complete demo people can run.