From 1b40f030e7d1965f43c3c9dabe15b7245379dc04 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=8E=8B=E5=BE=B7=E5=AE=87?= <kvtodev@outlook.com>
Date: Thu, 17 Sep 2026 00:05:57 +0800
Subject: [PATCH] =?UTF-8?q?=E5=88=A0=E6=8E=89=E8=81=8A=E5=A4=A9=20reducer?=
 =?UTF-8?q?=20=E9=87=8C=E6=B2=A1=E4=BA=BA=E8=AF=BB=E7=9A=84=E8=AE=A2?=
 =?UTF-8?q?=E9=98=85=E8=BA=AB=E4=BB=BD=E4=B8=8E=E9=A6=96=E5=B1=8F=E9=94=9A?=
 =?UTF-8?q?=E7=82=B9?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- DirectThreadChatState 去掉 subscriptionId 与 lastCompletedItemId 两个只写不读的字段
- resolveDirectThreadBootstrap 只把 bootstrap 事件 reduce 进状态，不再顺带写入这两个字段
- directThreadChat 单测改成断言聊天状态里不再出现这两个字段（bootstrap 载荷本身不变）
---
 .../project-workspace/directThreadChat.ts       | 17 +++--------------
 .../tests/directThreadChat.test.ts              |  5 +++--
 2 files changed, 6 insertions(+), 16 deletions(-)

diff --git a/apps/ai-game-creator-shell/src/features/project-workspace/directThreadChat.ts b/apps/ai-game-creator-shell/src/features/project-workspace/directThreadChat.ts
index 37adb0c7e..d9b978db5 100644
--- a/apps/ai-game-creator-shell/src/features/project-workspace/directThreadChat.ts
+++ b/apps/ai-game-creator-shell/src/features/project-workspace/directThreadChat.ts
@@ -32,9 +32,6 @@ export type DirectChatEntry = {
 };
 
 export type DirectThreadChatState = {
-  subscriptionId: string | null;
-  /** 首屏历史锚点：`subscribe` 给出的最后一条完成条目 id。 */
-  lastCompletedItemId: string | null;
   /** 最新回合是否还在跑；只由生命周期事件的先后决定。 */
   turnRunning: boolean;
   /** 历史切片条目，保持文件顺序。 */
@@ -45,8 +42,6 @@ export type DirectThreadChatState = {
 
 export function emptyDirectThreadChatState(): DirectThreadChatState {
   return {
-    subscriptionId: null,
-    lastCompletedItemId: null,
     turnRunning: false,
     history: [],
     live: [],
@@ -197,20 +192,14 @@ export function reduceDirectThreadEvents(
 /**
  * bootstrap 是运行态的唯一权威：游标已在队尾，返回的事件就是此刻要处理的事件。
  *
- * 历史窗口保留：bootstrap 不重新回读历史切片，那是 `lastCompletedItemId` 的职责。
+ * 订阅身份与首屏历史锚点（`subscriptionId` / `lastCompletedItemId`）是订阅循环自己的局部
+ * 事实，不进聊天状态：这里只把 bootstrap 事件 reduce 进现有状态。
  */
 export function resolveDirectThreadBootstrap(
   state: DirectThreadChatState,
   bootstrap: DirectThreadSubscriptionBootstrap,
 ): DirectThreadChatState {
-  return reduceDirectThreadEvents(
-    {
-      ...state,
-      subscriptionId: bootstrap.subscriptionId,
-      lastCompletedItemId: bootstrap.lastCompletedItemId ?? null,
-    },
-    bootstrap.events,
-  );
+  return reduceDirectThreadEvents(state, bootstrap.events);
 }
 
 /** 事件顺序 = 游标顺序；调用方只需要把 `consume` 的结果喂进来。 */
diff --git a/apps/ai-game-creator-shell/tests/directThreadChat.test.ts b/apps/ai-game-creator-shell/tests/directThreadChat.test.ts
index e381805dd..d9bb2b82f 100644
--- a/apps/ai-game-creator-shell/tests/directThreadChat.test.ts
+++ b/apps/ai-game-creator-shell/tests/directThreadChat.test.ts
@@ -80,8 +80,9 @@ describe('DirectProject 聊天 reducer', () => {
         ],
       },
     );
-    expect(bootstrapped.subscriptionId).toBe('sub-1');
-    expect(bootstrapped.lastCompletedItemId).toBe('msg-9');
+    // 订阅身份与首屏锚点由订阅循环自己持有，不写进聊天 reducer 状态。
+    expect(bootstrapped).not.toHaveProperty('subscriptionId');
+    expect(bootstrapped).not.toHaveProperty('lastCompletedItemId');
     expect(bootstrapped.turnRunning).toBe(true);
     expect(selectDirectChatEntries(bootstrapped)).toHaveLength(1);
   });