DATABASE_URL — PostgreSQL DSNREDIS_URL — Redis for RQ + schedulerSCRAPER_DB_KEY — Fernet key for encrypted auth blobsPUBLIC_FQDN — scrapers FQDN e.g. scraper.industrialminerals.chSMTP_HOST / SMTP_PORT / SMTP_USER / SMTP_PASSWORD / SMTP_SECURITY / SMTP_DEFAULT_FROM / SMTP_DEFAULT_RECIPIENTS_CSVheaders_json and auth_payload_json are encrypted at rest using the
Fernet key in SCRAPER_DB_KEY.
The SMTP password is pulled straight from SMTP_PASSWORD at send time — it is never logged or persisted.