feat(memory): implement quick search pipeline with Neo4j integration

api/app/repositories/neo4j/neo4j_connector.py

@@ -70,6 +70,12 @@ class Neo4jConnector:
             auth=basic_auth(username, password)
         )
 
+    async def __aenter__(self):
+        return self
+
+    async def __aexit__(self, exc_type, exc_val, exc_tb):
+        await self.close()
+
     async def close(self):
         """关闭数据库连接
         
@@ -77,11 +83,11 @@ class Neo4jConnector:
         """
         await self.driver.close()
 
-    async def execute_query(self, query: str, json_format=False, **kwargs: Any) -> List[Dict[str, Any]]:
+    async def execute_query(self, cypher: str, json_format=False, **kwargs: Any) -> List[Dict[str, Any]]:
         """执行Cypher查询
         
         Args:
-            query: Cypher查询语句
+            cypher: Cypher查询语句
             json_format: json格式化
             **kwargs: 查询参数，将作为参数传递给Cypher查询
             
@@ -92,7 +98,7 @@ class Neo4jConnector:
 
         """
         result = await self.driver.execute_query(
-            query,
+            cypher,
             database="neo4j",
             **kwargs
         )