OPENAI_API_KEY=your-openai-api-key
OPENAI_AGENT_MODEL=gpt-5.5

BRIGHTDATA_API_KEY=your-bright-data-api-key
BRIGHTDATA_SERP_ZONE=serp_api1
BRIGHTDATA_UNLOCKER_ZONE=web_unlocker1

# Optional tuning
BRIGHTDATA_REQUEST_ENDPOINT=https://api.brightdata.com/request
BRIGHTDATA_TIMEOUT_SECONDS=60
BRIGHTDATA_COUNTRY=us