Private instance vars, public get properties

sia/entry.py

@@ -5,10 +5,6 @@ import xml.etree.ElementTree as ET
 class Entry(ABC):
     """
     Abstract base class for all entry types in the working memory.
-    
-    Attributes:
-        id: Unique identifier for the entry
-        timestamp: When the entry was created
     """
     
     def __init__(self, id: str, timestamp: datetime):
@@ -19,9 +15,19 @@ class Entry(ABC):
             id: Unique identifier for this entry
             timestamp: Creation timestamp for this entry
         """
-        self.id = id
-        self.timestamp = timestamp
-    
+        self._id = id
+        self._timestamp = timestamp
+
+    @property
+    def id(self) -> str:
+        """Get entry's unique identifier."""
+        return self._id
+
+    @property
+    def timestamp(self) -> datetime:
+        """Get entry's creation timestamp."""
+        return self._timestamp
+
     @abstractmethod
     def update(self) -> None:
         """