Mini-game test

/admin/minigame-test simulates the mini-game room protocol entirely in the browser, with fake players instead of real logged-in clients — no live websocket needed.

Each fake player is a tab. For the active tab you can create a room, invite another fake player, accept/decline a pending invite, and — once the room has enough members — actually play the real mini-game bundle (loaded the same way the live client does), confirming the create/invite/accept/leave/broadcast flow end-to-end without needing a second browser session.

Four fake players (Alice, Bob, Charlie, Diana) are seeded by default. A player leaving mid-match dissolves the room for every remaining tab, mirroring the real server's MiniGameManager.