OptionalProviderThe longest one session can run, in seconds, as MJ runs it — after the driver's own
mitigations (reconnect, token refresh). undefined means unknown; never put a guess here.
Positive integers only.
OptionalSupportedThe normalized RealtimeTurnDetectionSettings fields this driver maps to its provider, with fidelity. Declare only what the driver's mapping actually sends; leave the key off when it maps none.
Static, instance-free facts about a realtime driver, read before any session exists. Open on purpose: later facts are added here.