Package-level declarations

Platform abstraction over runtime permission requests — the collaborator behind the RequestPermission event. Bound once per platform target in that target's own platformModule, so RequestPermissionEventRunner can reach it via get<PermissionManager>() without knowing which platform it's running on.

Outcome of a PermissionManager.requestPermissions call — mirrors the 3 outcomes RequestPermission fires triggers for (OnPermissionsAcquired/OnPermissionsDenied/ OnPermissionRationale).