From c8a8b0b0b8d6b3aedf29da554551da6773e614c6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=8E=8B=E5=BE=B7=E5=AE=87?= <kvtodev@outlook.com>
Date: Tue, 22 Sep 2026 14:56:50 +0800
Subject: [PATCH] =?UTF-8?q?DirectProject=20=E8=81=8A=E5=A4=A9=E6=8A=95?=
 =?UTF-8?q?=E5=BD=B1=E8=A1=A5=20memo=EF=BC=8C=E8=AE=A9=E4=B8=8B=E6=B8=B8?=
 =?UTF-8?q?=20memo=20=E4=B8=8D=E5=86=8D=E7=A9=BA=E8=BD=AC?=
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- DirectProjectChatView 的 directTurns 改用 useMemo 缓存，判据为 directEntries / localMessages / directTurnRunning / pendingUserItemId
- 注释写明不缓存时每次渲染都是新数组引用，useDirectProjectTurnStatus 里以 turns 为判据的 useMemo 永远命中不了，读者会误以为 turnStatus 引用稳定
---
 .../chat/DirectProjectChatView.tsx            | 27 ++++++++++++++-----
 1 file changed, 20 insertions(+), 7 deletions(-)

diff --git a/apps/ai-game-creator-shell/src/view/project-development/chat/DirectProjectChatView.tsx b/apps/ai-game-creator-shell/src/view/project-development/chat/DirectProjectChatView.tsx
index 8e3515ace..0cd590b95 100644
--- a/apps/ai-game-creator-shell/src/view/project-development/chat/DirectProjectChatView.tsx
+++ b/apps/ai-game-creator-shell/src/view/project-development/chat/DirectProjectChatView.tsx
@@ -1,6 +1,12 @@
 import type { UIEventHandler } from 'react';
 import type { Ref } from 'react';
-import { useEffect, useImperativeHandle, useRef, useState } from 'react';
+import {
+  useEffect,
+  useImperativeHandle,
+  useMemo,
+  useRef,
+  useState,
+} from 'react';
 
 import { AGENT_CHAT_SCROLL_BOTTOM_THRESHOLD } from '../../../app/constants';
 import { claimInitialTurnForPage } from '../../../app/initialTurnClaims';
@@ -133,12 +139,19 @@ export function DirectProjectChatView({
     turnCancelling,
     uploadFiles,
   } = chat;
-  const directTurns = buildDirectChatTurns({
-    entries: directEntries,
-    localMessages,
-    turnRunning: directTurnRunning,
-    pendingUserItemId,
-  });
+  // 这份投影要参与下游 memo 的判据，必须自己先缓存：不缓存的话每次渲染都是一份新数组，
+  // `useDirectProjectTurnStatus` 里以 `turns` 为判据的 `useMemo` 永远命中不了，那层 memo
+  // 就成了死代码，读代码的人还会误以为 `turnStatus` 是引用稳定的。
+  const directTurns = useMemo(
+    () =>
+      buildDirectChatTurns({
+        entries: directEntries,
+        localMessages,
+        turnRunning: directTurnRunning,
+        pendingUserItemId,
+      }),
+    [directEntries, localMessages, directTurnRunning, pendingUserItemId],
+  );
   // 「这一轮在跑吗」只从这一个派生入口读：原生真相 / 本地命令在飞 / 最新一轮三态。
   const turnStatus = useDirectProjectTurnStatus({
     turnRunning: directTurnRunning,