The provider-key half of GetProviderVoiceSettings: the longest normalized-prefix match
between the authored realtime.voice.providers keys and the resolved driver, or null when none
match.
Exported because "did any authored provider key match this driver?" is a question
GetProviderVoiceSettings cannot answer — it returns settings for every driver once an
agnostic voice is set. Diagnosing dropped per-provider settings needs THIS.
The provider-key half of GetProviderVoiceSettings: the longest normalized-prefix match between the authored
realtime.voice.providerskeys and the resolved driver, ornullwhen none match.Exported because "did any authored provider key match this driver?" is a question GetProviderVoiceSettings cannot answer — it returns settings for every driver once an agnostic voice is set. Diagnosing dropped per-provider settings needs THIS.