DEEPSEEK_API_KEY=sk-xxxx
# 以后若接入其他厂商，按 models.yaml 中的 api_key_env 增加对应变量，例如：
# OPENAI_API_KEY=sk-xxxx

HOST=127.0.0.1
PORT=8000
# Comma-separated origins when frontend runs on another port. Same-origin mount can leave empty.
CORS_ORIGINS=