v3.8.1

Fixed

• Debug notifications went silent on a background relaunch. The switch could only be
  flipped from Dart, and both Dart-side paths need the engine running — so when iOS relaunched
  the app in the background on a region event, the plugin took delegate callbacks while the
  flag was still off and every notification was swallowed. That is precisely the case the
  notifications exist to observe. A host-settable native switch now sits alongside the Dart
  one; either arms them.

Changed

• Native SDKs pinned to 3.8.1, which carries the fix for encounter_mesh and
  presence_heartbeat never reaching the payload — until now every beacon-less upload was
  labelled as an ordinary timer sync, so a presence report was indistinguishable from a
  regular one on the backend.