auth.dnvt.me — sym M22 auth receiver

Mode: callback (callback receiver)

Endpoints:
  GET  /auth/status[?env=sandbox|prod]
  GET  /auth/start?env=sandbox|prod        (bearer)
  GET  /auth/export?env=sandbox|prod       (bearer)
  POST /auth/exchange-verifier             (bearer)
  GET  /etrade/oauth/callback              (E*TRADE redirect)

See docs/plans/26-etrade-cloud-runner-auth.md + plan 28.