Function close_opcda_browse_session 

pub async fn close_opcda_browse_session(
    bridge_host: &str,
    session_id: &str,
) -> DriverResult<()>

Explicitly releases one gateway-side browse session without requiring an OPC server ProgID. The session ID is the only value the bridge close RPC needs, so this is separate from OpcDaDriver for callers such as the CLI’s opc close command that may no longer have the server name handy.