Registry entry plus one config-driven FORMAT_HANDLERS handler. The model id travels in an HTTP `model` header rather than the JSON body, and the voice is a reference_id (preset or cloned voice model). Closes #2411
Registry entry plus one config-driven FORMAT_HANDLERS handler. The model id travels in an HTTP `model` header rather than the JSON body, and the voice is a reference_id (preset or cloned voice model). Closes #2411