未知（继上次中断）

backend/app/schemas/notification.py

@@ -0,0 +1,18 @@
+import uuid
+from datetime import datetime
+
+from pydantic import BaseModel, ConfigDict
+
+
+class NotificationItem(BaseModel):
+    id: uuid.UUID
+    document_id: uuid.UUID
+    version_id: uuid.UUID
+    document_title: str
+    document_no: str | None = None
+    version_no: str
+    change_summary: str | None = None
+    effective_at: datetime | None = None
+    created_at: datetime
+
+    model_config = ConfigDict(from_attributes=True)