pub const USER_AGENT: &str = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) \
AppleWebKit/537.36 (KHTML, like Gecko) \
Chrome/124.0.0.0 Safari/537.36";Expand description
Use a realistic browser UA everywhere so the target server does not
reject requests. (Previously room_list.rs used a different string,
causing inconsistent behaviour.)