Fourth mainnet supplier, branded by model rather than provider so future
OpenRouter-backed suppliers can claim their own compose files without
naming collisions. LLM_BACKEND=openai pointed at https://openrouter.ai/api
with a Bearer-token API key in supplier/.env.kimi. Traefik host
mp-suppliers-kimi.vector.apexfusion.org. No code changes needed — the
OPENAI_API_KEY plumbing landed in 1466442.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>