PORT=3000 HOST=127.0.0.1 DB_HOST=127.0.0.1 DB_USER=root DB_PASSWORD= DB_NAME=talkingbooklet DB_PORT=3306 AWS_REGION=ap-south-1 AWS_ACCESS_KEY_ID= AWS_SECRET_ACCESS_KEY= AWS_BUCKET= OPENSEARCH_ENDPOINT= OPENSEARCH_USER= OPENSEARCH_PASSWORD= LIVEKIT_URL= LIVEKIT_API_KEY= LIVEKIT_API_SECRET= LIVEKIT_AGENT_NAME= FRONTEND_ORIGIN=http://localhost:5173 JWT_SECRET= SESSION_TOKEN_TTL=2h CHAT_ENGINE_URL=http://127.0.0.1:3001 CHAT_ENGINE_TOKEN= PUBLIC_RATE_PER_MINUTE=30 AUTO_FULL_CONTEXT_MAX_TOKENS=60000