Function validate_console_session 

pub async fn validate_console_session(
    infra: &InfraContext<'_>,
    token: &str,
    name: &str,
) -> Result<(), Error>

Validate that a CFS session is suitable for attaching a console.

Returns NotFound if the session doesn’t exist, BadRequest if the session is not image-type or has missing internal state, and Conflict if it is not running.