perf: 优化向量库连接性能

easy-agents-store/easy-agents-store-milvus/src/main/java/com/easyagents/store/milvus/MilvusVectorStore.java

@@ -47,7 +47,7 @@ import java.util.*;
 /**
  * Milvus vector store based on Milvus Java SDK v2.
  */
-public class MilvusVectorStore extends DocumentStore {
+public class MilvusVectorStore extends DocumentStore implements AutoCloseable {
 
     private static final Logger LOG = LoggerFactory.getLogger(MilvusVectorStore.class);
     private static final long LOAD_TIMEOUT_MS = 30_000L;
@@ -546,4 +546,14 @@ public class MilvusVectorStore extends DocumentStore {
             return false;
         }
     }
+
+    @Override
+    public void close() {
+        try {
+            client.close(1L);
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            LOG.warn("Interrupted while closing Milvus client. uri={}", config.getUri(), e);
+        }
+    }
 }