refactor: split flat core into capability packages, layer the conversations service, English defaults for every model-facing text

src/beaver_gateway/frontends/telegram/outbox.py

@@ -32,7 +32,7 @@ from beaver_gateway.storage.models import Delivery
 if TYPE_CHECKING:
     from aiogram import Bot
 
-    from beaver_gateway.core.bus import EventBus
+    from beaver_gateway.events.bus import EventBus
     from beaver_gateway.storage.db import Database
 
 __all__ = ["Outbox"]