Fix hsetex FXX enum usage

agent_memory_server/long_term_memory.py

@@ -10,6 +10,7 @@
 from docket import Timeout
 from docket.dependencies import Perpetual
 from redis.asyncio import Redis
+from redis.commands.core import HashDataPersistOptions
 from ulid import ULID
 
 from agent_memory_server.config import settings
@@ -542,7 +543,7 @@ async def extract_memory_structure(
             "topics": encode_tag_values(merged_topics),
             "entities": encode_tag_values(merged_entities),
         },
-        data_persist_option="FXX",
+        data_persist_option=HashDataPersistOptions.FXX,
         keepttl=True,
     )
     if result == 0:

tests/test_long_term_memory.py

@@ -3,6 +3,7 @@
 from unittest.mock import AsyncMock, MagicMock, Mock, patch
 
 import pytest
+from redis.commands.core import HashDataPersistOptions
 
 from agent_memory_server.filters import Entities, Namespace, SessionId, Topics
 from agent_memory_server.long_term_memory import (
@@ -343,7 +344,7 @@ async def test_extract_memory_structure(self, mock_async_redis_client):
             mapping = call_kwargs[1]["mapping"]
             assert mapping["topics"] == "topic1,topic2"
             assert mapping["entities"] == "entity1,entity2"
-            assert call_kwargs[1]["data_persist_option"] == "FXX"
+            assert call_kwargs[1]["data_persist_option"] == HashDataPersistOptions.FXX
             assert call_kwargs[1]["keepttl"] is True
 
     @pytest.mark.asyncio