diff --git a/apps/ai-game-creator-shell/src-tauri/src/agent/direct_project_history.rs b/apps/ai-game-creator-shell/src-tauri/src/agent/direct_project_history.rs
index e51c425ae..b552a53b9 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/agent/direct_project_history.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/agent/direct_project_history.rs
@@ -140,15 +140,18 @@ pub(crate) fn append_direct_project_history_item_at(
     }
     let _project_lock = crate::project::acquire_project_write_lock(root, "conversation.write")?;
     let path = history_path(root);
-    prepare_game_creator_private_path_for_read(&path, false, "DirectProject 历史")?;
+    let history_exists =
+        prepare_game_creator_private_path_for_read(&path, false, "DirectProject 历史")?;
     let lock = project_append_lock_for(&path)?;
     let _append_guard = lock.lock("DirectProject 历史追加写")?;
-    if let Some(item_id) = item.get("id").and_then(Value::as_str) {
-        if let Some(existing) = find_direct_project_history_item_by_id_at(&path, item_id)? {
-            if &existing == item {
-                return Ok(());
+    if history_exists {
+        if let Some(item_id) = item.get("id").and_then(Value::as_str) {
+            if let Some(existing) = find_direct_project_history_item_by_id_at(&path, item_id)? {
+                if &existing == item {
+                    return Ok(());
+                }
+                return Err(format!("DirectProject 历史 item id 冲突：{item_id}"));
             }
-            return Err(format!("DirectProject 历史 item id 冲突：{item_id}"));
         }
     }
     let line = record(item)?;