5. Full gateway path (Anthropic / OpenAI / any provider via LiteLLM)

cp .env.example .env
# In .env set the keys you have: ANTHROPIC_API_KEY / OPENAI_API_KEY / DEEPSEEK_API_KEY
# and point LOOP_MODEL_A / LOOP_MODEL_B at aliases declared in litellm.config.yaml.
docker compose up -d         # LiteLLM gateway on :41400 (health: http://localhost:41400/health)
npm run demo                 # the table now ALSO includes loop-gateway-a / loop-gateway-b
docker compose down          # stop the gateway when done