Force-dispatch any pending coalesced burst synchronously.
Snapshot of buffered events in chronological order (oldest first).
Inject a synthetic DevtoolsEvent directly into the bus, bypassing the
engine tap. Used by the Chrome MV3 extension panel to feed events arriving
over the port-messaging bridge into the local bus instance.
Subscribe to live events. Replays current buffer synchronously before returning.
Release engine-tap, clear all subscribers, cascade inactive to registry.