LIVEKIT_URL= LIVEKIT_API_KEY= LIVEKIT_API_SECRET= LIVEKIT_AGENT_NAME= AWS_REGION=ap-south-1 AWS_ACCESS_KEY_ID= AWS_SECRET_ACCESS_KEY= CHAT_ENGINE_URL=http://127.0.0.1:3001 CHAT_ENGINE_TOKEN= FILLER_AFTER_MS=800 MIN_ENDPOINTING_DELAY=0.5 MIN_INTERRUPTION_WORDS=2 USER_AWAY_TIMEOUT=20 OPENSEARCH_URL= OPENSEARCH_USER= OPENSEARCH_PASSWORD= DB_HOST=127.0.0.1 DB_USERNAME=root DB_PASSWORD= DB_DATABASE=talkingbooklet DB_PORT=3306