Add unit test for malformed Lucene query in OmniSearch

server/src/handlers/meta.rs

@@ -766,4 +766,21 @@ mod tests {
         println!("OMNI RES: {}", omni_res);
         assert!(omni_res.contains("omni-1"), "omni search should return results containing the task id");
     }
+
+    #[tokio::test]
+    async fn test_omni_search_malformed_query() {
+        let dir = tempfile::tempdir().unwrap();
+        let state = Arc::new(MemoryState::new(dir.path().to_str().unwrap()));
+        
+        let omni = OmniSearchHandler;
+        
+        // Pass a malformed Lucene query (unclosed parenthesis)
+        let omni_res = omni
+            .execute(json!({"query": "title: (unclosed"}), state.clone())
+            .await;
+            
+        assert!(omni_res.is_err());
+        let err_msg = omni_res.unwrap_err();
+        assert!(err_msg.contains("malformed Lucene syntax"));
+    }
 }