Environment Variables
BITGET_ACCESS_KEY=
BITGET_SECRET_KEY=
BITGET_PASSPHRASE=Read by Bitget.new() when access_key/secret_key/passphrase aren't passed explicitly, and
required unless the client is built with public=True. One triple authenticates against
whichever surface (client.classic or client.uta) matches your account's actual mode. See
API Keys Setup.