camera.bindToPlayer

Make the joining player use this camera in play by binding it to the active scene's PlayerPrototype: it re-parents the camera into the prototype subtree (so it is cloned with the player on spawn), sets the prototype's camera role to it, and detaches + disables any displaced camera (parked idle, not deleted). Pair it with a static behavior (@builtin::controller.menu) for a fixed PS1-style camera the player moves within, or a follow behavior for a tracking one. A player-less scene has no prototype — there the rendering camera is simply the highest-priority one.