Module observer

Structs

ObserverBus

Holds strong Arc references so FFI-registered observers stay alive for the bus’s lifetime. The FFI boundary passes a Box<dyn Observer> once and never holds another strong reference on the caller side, so the bus must own it.

Enums

ChangeEvent

What changed in the SDK’s internal state.

Traits

Observer

Implemented by façades to receive cache-state notifications from the core.