Volcengine AUC official auth and network diagnostics
This release keeps Volcengine STT aligned with the official OpenSpeech AUC headers and separates network errors from credential guidance.
- New-console Volcengine ASR keys continue to use the official X-Api-Key header
- Old-console App Key:Access Key credentials still send both X-Api-App-Key and X-Api-Access-Key
- Settings now shows network/proxy guidance separately when the OpenSpeech endpoint cannot be reached