diff --git a/apps/ai-game-creator-shell/src/App.tsx b/apps/ai-game-creator-shell/src/App.tsx
index 2c63e38cd..264e9692f 100644
--- a/apps/ai-game-creator-shell/src/App.tsx
+++ b/apps/ai-game-creator-shell/src/App.tsx
@@ -335,11 +335,7 @@ function directCodexProcessDetail({
     return '正在记录失败原因';
   }
   if (status === 'streaming') {
-    const text = accumulatedText?.trim();
-    if (text) {
-      return `正在生成回复：${text}`;
-    }
-    return directCodexActivityDetail(activity, status);
+    return '正在生成回复';
   }
   if (status === 'finalizing') {
     return directCodexActivityDetail(activity, status);
@@ -351,6 +347,24 @@ function directCodexProcessDetail({
   return directCodexActivityDetail(activity, status);
 }
 
+function directCodexTransientReplyText({
+  accumulatedText,
+  status,
+}: {
+  accumulatedText?: string | null;
+  status: string;
+}) {
+  if (
+    status !== 'streaming' &&
+    status !== 'finalizing' &&
+    status !== 'completed'
+  ) {
+    return null;
+  }
+  const text = accumulatedText?.trim();
+  return text || null;
+}
+
 function directCodexConversationMessageId(
   turnId: string,
   role: ChatMessage['role'],
@@ -1305,15 +1319,18 @@ export function App({
           setDirectCodexStatus(payload.status);
           setDirectCodexProgress(processDetail);
           setDirectCodexProgressUpdatedAt(updatedAt);
-          setDirectCodexTransientReply(processDetail);
+          setDirectCodexTransientReply('');
           setDirectCodexTransientReplyUpdatedAt(null);
           return;
         }
         setDirectCodexStatus(payload.status);
         setDirectCodexProgress(processDetail);
         setDirectCodexProgressUpdatedAt(updatedAt);
-        setDirectCodexTransientReply(processDetail);
-        setDirectCodexTransientReplyUpdatedAt(updatedAt);
+        const transientReply = directCodexTransientReplyText(payload);
+        if (transientReply !== null) {
+          setDirectCodexTransientReply(transientReply);
+          setDirectCodexTransientReplyUpdatedAt(updatedAt);
+        }
       },
     )
       .then((unlisten) => {
@@ -1358,7 +1375,6 @@ export function App({
         const progressDetail = ensureDirectProcessPrefix(event.payload.message);
         setDirectCodexStatus('running');
         setDirectCodexProgress(progressDetail);
-        setDirectCodexTransientReply(progressDetail);
         setDirectCodexProgressUpdatedAt(Date.now());
         return;
       }
@@ -5537,7 +5553,7 @@ export function App({
         setDirectCodexStatus('accepted');
         setDirectCodexProcessKey(`${directProjectPath}\u0000${clientTurnId}`);
         setDirectCodexProgress('正在等待陶泥儿开始');
-        setDirectCodexTransientReply('正在等待陶泥儿开始');
+        setDirectCodexTransientReply('');
         setDirectCodexProgressUpdatedAt(Date.now());
         setDirectCodexTransientReplyUpdatedAt(null);
         setProjectSupervisorRuntimeError('');
@@ -5609,7 +5625,6 @@ export function App({
             );
             setDirectCodexStatus('finalizing');
             setDirectCodexProgress('正在同步项目文件');
-            setDirectCodexTransientReply('正在同步项目文件');
             setDirectCodexProgressUpdatedAt(Date.now());
             await refreshDirectProjectManifest(directProjectPath);
           }
diff --git a/apps/ai-game-creator-shell/src/features/project-workspace/ProjectSupervisorView.tsx b/apps/ai-game-creator-shell/src/features/project-workspace/ProjectSupervisorView.tsx
index 566f18df7..98537ada9 100644
--- a/apps/ai-game-creator-shell/src/features/project-workspace/ProjectSupervisorView.tsx
+++ b/apps/ai-game-creator-shell/src/features/project-workspace/ProjectSupervisorView.tsx
@@ -186,7 +186,7 @@ export function ProjectSupervisorView({
             </p>
           ))}
           {directCodex &&
-          (runtimePanelProps.controlBusy || Boolean(transientReply)) ? (
+          (runtimePanelProps.controlBusy || Boolean(directProcessDetail)) ? (
             <section
               className={`project-supervisor-process-card${runtimePanelProps.controlBusy ? ' is-active' : ''}`}
               aria-label="陶泥儿执行过程"
@@ -203,7 +203,7 @@ export function ProjectSupervisorView({
                     : '陶泥儿正在处理'}
                 </strong>
               </header>
-              {(directCodex ? directProcessDetail : transientReply) ? (
+              {directProcessDetail ? (
                 <div className="project-supervisor-process-detail">
                   <p
                     className={
@@ -211,14 +211,10 @@ export function ProjectSupervisorView({
                     }
                     aria-label="陶泥儿正在执行的内容"
                   >
-                    {directCodex ? directProcessDetail : transientReply}
+                    {directProcessDetail}
                   </p>
-                  {(directCodex
-                    ? directProcessDetail
-                    : transientReply
-                  ).includes('\n') ||
-                  (directCodex ? directProcessDetail : transientReply).length >
-                    96 ? (
+                  {directProcessDetail.includes('\n') ||
+                  directProcessDetail.length > 96 ? (
                     <button
                       type="button"
                       className="project-supervisor-process-toggle"
@@ -237,10 +233,13 @@ export function ProjectSupervisorView({
                 </div>
               ) : null}
             </section>
-          ) : transientReply ? (
+          ) : null}
+          {transientReply ? (
             <p
               className="message message--assistant"
-              aria-label="项目总控 Agent 实时回复"
+              aria-label={
+                directCodex ? '陶泥儿实时回复' : '项目总控 Agent 实时回复'
+              }
               aria-live="polite"
               data-runtime-owned="true"
             >
diff --git a/apps/ai-game-creator-shell/src/styles.css b/apps/ai-game-creator-shell/src/styles.css
index ecb06d6ad..e4281b392 100644
--- a/apps/ai-game-creator-shell/src/styles.css
+++ b/apps/ai-game-creator-shell/src/styles.css
@@ -2587,6 +2587,12 @@ textarea {
   display: block;
   max-height: 180px;
   overflow: auto;
+  scrollbar-color: rgb(47 111 75 / 58%) transparent;
+}
+
+.project-supervisor-process-card p.is-expanded::-webkit-scrollbar-track,
+.project-supervisor-process-card p.is-expanded::-webkit-scrollbar-corner {
+  background: transparent;
 }
 
 .project-supervisor-process-detail {
diff --git a/apps/ai-game-creator-shell/tests/appSurface/project-development.suite.ts b/apps/ai-game-creator-shell/tests/appSurface/project-development.suite.ts
index 90558c11f..7eaf924ca 100644
--- a/apps/ai-game-creator-shell/tests/appSurface/project-development.suite.ts
+++ b/apps/ai-game-creator-shell/tests/appSurface/project-development.suite.ts
@@ -5700,7 +5700,10 @@ export function registerProjectSupervisorSurfaceTests() {
     expect(
       within(streamingProcessCard).getByLabelText('陶泥儿正在执行的内容')
         .textContent,
-    ).toContain('正在生成回复：DIRECT_STREAM:先完成正式客户端玩法拆解');
+    ).toBe('正在生成回复');
+    expect(
+      within(supervisorSurface).getByLabelText('陶泥儿实时回复').textContent,
+    ).toBe('DIRECT_STREAM:先完成正式客户端玩法拆解');
     expect(directMessageList.scrollTop).toBe(640);
     expect(within(supervisorSurface).queryByText(/不能覆盖正文/u)).toBeNull();
     expect(
@@ -5725,6 +5728,9 @@ export function registerProjectSupervisorSurfaceTests() {
     expect(
       within(streamingProcessCard).getByText(/正在执行 npm test/u),
     ).not.toBeNull();
+    expect(
+      within(supervisorSurface).getByLabelText('陶泥儿实时回复').textContent,
+    ).toBe('DIRECT_STREAM:先完成正式客户端玩法拆解');
     expect(
       (
         within(streamingProcessCard).getByRole('button', {
@@ -5808,10 +5814,10 @@ export function registerProjectSupervisorSurfaceTests() {
     expect(
       within(failedTurnProcessCard).getByLabelText('陶泥儿正在执行的内容')
         .textContent,
-    ).toContain('正在生成回复：即将失败的临时正文');
+    ).toBe('正在生成回复');
     expect(
-      within(supervisorSurface).queryByLabelText('陶泥儿实时回复'),
-    ).toBeNull();
+      within(supervisorSurface).getByLabelText('陶泥儿实时回复').textContent,
+    ).toBe('即将失败的临时正文');
     await act(async () => {
       directTurnUpdateHandler?.({
         payload: {
diff --git a/docs/project-memory/shared-memory/decision-log.md b/docs/project-memory/shared-memory/decision-log.md
index b13c9d328..13e60d322 100644
--- a/docs/project-memory/shared-memory/decision-log.md
+++ b/docs/project-memory/shared-memory/decision-log.md
@@ -18,9 +18,9 @@
 ## 2026-09-02 Direct 过程卡按回合阶段状态驱动
 
 - 背景：DirectProject 结果卡把工具活动词、中间文本和真实回复增量都当成“实时回复”，标题随最近一次事件跳动；上游常整包返回正文时还叠加合成打字机，用户看到的是行为名而非当前阶段。
-- 决策：Direct 过程卡顶部标题只由 `GameCreatorDirectTurnUpdateStatus` 决定（accepted=需求已接收 / running=任务执行中 / streaming=回复生成中 / finalizing=结果整理中 / completed=回复已生成 / failed=处理失败），小字只展示当前正在执行的具体内容并统一加“正在”前缀；真实回复增量（AccumulatedText）才标记 streaming，计划、推理、工具输出与 Activity 一律 running。移除合成打字机回放；工具说明/中间文本不再触发 streaming。展开/收起是同一 `project + clientTurnId` 内的持久状态，内容更新不重置，切换新回合才收起。
+- 决策：Direct 过程卡顶部标题只由 `GameCreatorDirectTurnUpdateStatus` 决定（accepted=需求已接收 / running=任务执行中 / streaming=回复生成中 / finalizing=结果整理中 / completed=回复已生成 / failed=处理失败），小字只展示当前正在执行的具体内容并统一加“正在”前缀；真实回复增量（AccumulatedText）才标记 streaming，计划、推理、工具输出与 Activity 一律 running。生成中的累计回复直接作为 assistant 消息气泡在会话列表中原位更新，不再拼进过程卡；进入 finalizing / completed 时保留完整累计回复直到正式消息接管，失败时清除未完成正文。移除合成打字机回放；工具说明/中间文本不再触发 streaming。展开/收起是同一 `project + clientTurnId` 内的持久状态，内容更新不重置，切换新回合才收起；展开详情的滚动条轨道和角落保持透明。
 - 影响范围：`apps/ai-game-creator-shell/src-tauri/src/agent/direct_runtime.rs` 的 DirectProject observer、`apps/ai-game-creator-shell/src/App.tsx` 的事件投影、`ProjectSupervisorView` 过程卡渲染与对应 AppSurface 回归。
-- 验证方式：Rust 单测证明只有开启流式时的 AccumulatedText 是 streaming；AppSurface 覆盖接受态、running 长文本展开、streaming 标题与小字、同一回合后续 running 不收起、失败态小字与卡片清理；AGC typecheck、全量 appSurface、rustfmt、`npm run check:encoding`、`git diff --check` 通过。
+- 验证方式：Rust 单测证明只有开启流式时的 AccumulatedText 是 streaming；AppSurface 覆盖接受态、running 长文本展开、streaming 正文进入 assistant 气泡且过程卡只显示阶段、同一回合后续 running 不覆盖正文也不收起、失败后清除未完成正文、正式消息接管不重复；样式核对确认展开详情的滚动条轨道与角落透明；AGC typecheck、全量 appSurface、rustfmt、`npm run check:encoding`、`git diff --check` 通过。
 - 关联文档：`docs/technical/【技术方案】Direct回合行为审计账本-2026-08-31.md`、分支 `feat/agc-llm-router-official-chain`。
 
 ---