VITE_AZURE_SPEECH_KEY=5b401f52c9064cec9247f4190cf99ea4
VITE_AZURE_SPEECH_REGION=eastasia
# VITE_SPEAKING_API_HOST=http://localhost:8000

# 学生录音上送方式：websocket(默认，流式) | http(单次 POST /speak)
# VITE_SPEAKING_TRANSPORT=http
