{"service":"gemini-speech-tts","status":"running","region":"us-central1","credentials_exists":true,"gemini_api_key_configured":false,"tts_available":true,"speech_eval_available":true,"active_credential":"tts.json","tts_default_model":"gemini-3.1-flash-tts-preview","speech_eval_model":"gemini-3.5-flash-lite","key_mode":"single-primary","health_guard":{"consecutive_failures":0,"auto_stop_threshold":50,"last_health_check_time":"-","last_health_check_result":"正常监控中"}}