Merge commit '4cf6f91e954b770198578bcb8db5d98ac964bfed' as 'common'

common/src/cartsnitch_common/schemas/events.py

@@ -0,0 +1,17 @@
+"""Redis pub/sub event envelope and payload schemas."""
+
+from datetime import datetime
+from typing import Any
+
+from pydantic import BaseModel
+
+from cartsnitch_common.constants import EventType
+
+
+class EventEnvelope(BaseModel):
+    """Standard event wrapper for all Redis pub/sub messages."""
+
+    event_type: EventType
+    timestamp: datetime
+    service: str
+    payload: dict[str, Any]