DATABASE_URL=postgresql+asyncpg://agent:agent@postgres:5432/agent REDIS_URL=redis://redis:6379/0 XAI_API_KEY= XAI_FAST_MODEL=grok-4.1-fast XAI_BALANCED_MODEL=grok-4.1-fast XAI_STRONG_MODEL=grok-4.6 CORS_ORIGINS=http://localhost:3000