防止跨项目历史切片串写

历史请求返回后校验当前项目路径，丢弃过期结果。

apps/ai-game-creator-shell/src/App.tsx

@@ -11917,6 +11917,9 @@ export function App({
               limit: CONVERSATION_VISIBLE_STEP,
             },
           );
+          if (localProjectPathRef.current !== projectPath) {
+            return;
+          }
           const older = directThreadHistoryItemsToMessages(slice.items).map(
             (message) => ({
               role: