.env.example

# ── PostgreSQL (Airflow metadata) ──
POSTGRES_USER=airflow
POSTGRES_PASSWORD=change-me-strong-password
POSTGRES_DB=airflow
GF_SECURITY_ADMIN_PASSWORD=change-me-strong-password

# ── Security / Path Resolution ──
ETL_DATA_ROOT=/app/data
ALLOW_PRIVATE_API_URLS=false

# ── HuggingFace Models ──
HF_MODELS_PATH=./hf_models

# ── AI Agent ──
LLM_PROVIDER=openai
OPENAI_API_KEY=
OPENAI_MODEL=gpt-4o-mini

# ── OpenRouter (free alternative — https://openrouter.ai/keys) ──
OPENROUTER_API_KEY=
OPENROUTER_MODEL=stepfun/step-3.5-flash:free
# Optional comma-separated fallback models (used when selected model has no endpoint)
OPENROUTER_FALLBACK_MODELS=arcee-ai/trinity-large-preview:free,qwen/qwen3-next-80b-a3b-instruct:free,openai/gpt-oss-120b:free