diff --git a/apps/ai-game-creator-shell/src-tauri/src/agent/codex_app_server.rs b/apps/ai-game-creator-shell/src-tauri/src/agent/codex_app_server.rs
index e5411addc..ed1209ddf 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/agent/codex_app_server.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/agent/codex_app_server.rs
@@ -2302,8 +2302,18 @@ impl CodexAppServerConnection {
                                     "rawResponseItem/completed 缺少 item".to_string(),
                                 ));
                             }
-                            append_direct_project_history_item_at(history_root, &item)
-                                .map_err(platform_llm::LlmError::InvalidRequest)?;
+                            let history_root = history_root.to_path_buf();
+                            let history_item = item.clone();
+                            tokio::task::spawn_blocking(move || {
+                                append_direct_project_history_item_at(&history_root, &history_item)
+                            })
+                            .await
+                            .map_err(|error| {
+                                platform_llm::LlmError::Transport(format!(
+                                    "DirectProject 历史落盘任务失败：{error}"
+                                ))
+                            })?
+                            .map_err(platform_llm::LlmError::InvalidRequest)?;
                             direct_project_history.complete_item(&item);
                         }
                     }