llmman (https://github.com/llmmanorg/llmman) serves the Ollama API on
port 17434 and works with the bot as-is, so document it in setup-local
and link it from the README. Since the backend is no longer Ollama-only,
rename the env vars to LLM_ENDPOINT / LLM_PORT as requested in review.
OLLAMA_IP / OLLAMA_PORT are kept as deprecated aliases in keys.ts and
docker-compose.yml so existing deployments keep working.
