[SKY-6] Backend: Enable 2FA code detection without TOTP credentials (#4786)

skyvern/forge/sdk/notification/base.py

@@ -0,0 +1,21 @@
+"""Abstract base for notification registries."""
+
+import asyncio
+from abc import ABC, abstractmethod
+
+
+class BaseNotificationRegistry(ABC):
+    """Abstract pub/sub registry scoped by organization.
+
+    Implementations must fan-out: a single publish call delivers the
+    message to every active subscriber for that organization.
+    """
+
+    @abstractmethod
+    def subscribe(self, organization_id: str) -> asyncio.Queue[dict]: ...
+
+    @abstractmethod
+    def unsubscribe(self, organization_id: str, queue: asyncio.Queue[dict]) -> None: ...
+
+    @abstractmethod
+    def publish(self, organization_id: str, message: dict) -> None: ...