auto tries platform/suppliers/openrouter/llm-connect, then the live
activity-core workload lane, then OPENROUTER_API_KEY. A denied token
falls back to the environment. LLM_CONNECT_KEY_SOURCE selects env or
openbao alone.
Assistant: grok
Assistant-Session: 01a11ab6-1534-7d63-8606-662b92a80ed6