Issue: TestFlight iOS clients register production APNs device tokens, but notifications from a default OpenChamber server are not delivered.
Expected behavior: the released iOS app receives notifications without requiring users to configure an APNs environment, while development builds can explicitly select sandbox delivery.
Root cause: both relay and direct APNs delivery defaulted to the sandbox environment, so production TestFlight tokens were sent to the wrong APNs endpoint.
Fix: default both delivery modes to production, preserve OPENCHAMBER_APNS_ENVIRONMENT=sandbox as an explicit development override, and update tests and documentation.
natheihei
12e2c55171