Function cmd_create 

pub async fn cmd_create(
    room_id: &str,
    socket: Option<&Path>,
    visibility: &str,
    invite: &[String],
    token: &str,
) -> Result<()>

One-shot create subcommand: connect to daemon, create a room, print result.

Sends a CREATE:<room_id> request to the daemon socket with the given visibility and invite list. The daemon creates the room immediately and returns a room_created envelope.

socket overrides the default daemon socket path (auto-discovered if None). token is required for authentication — the daemon validates it against the global UserRegistry.