diff --git a/apps/ai-game-creator-shell/src/features/project-workspace/ConversationModelSelect.tsx b/apps/ai-game-creator-shell/src/features/project-workspace/ConversationModelSelect.tsx
index aed89fa26..66dfa522a 100644
--- a/apps/ai-game-creator-shell/src/features/project-workspace/ConversationModelSelect.tsx
+++ b/apps/ai-game-creator-shell/src/features/project-workspace/ConversationModelSelect.tsx
@@ -98,6 +98,9 @@ export function ConversationModelSelect({
   const [busy, setBusy] = useState(!initialCatalog);
   const [error, setError] = useState('');
   const [notice, setNotice] = useState('');
+  /** 触发钮上显示的模型名（目录还没读完时用「模型」占位）；同时用作触发钮的 `title`。 */
+  const triggerLabel =
+    models.find((model) => model.id === selected)?.displayName ?? '模型';
   const [manualRefreshBusy, setManualRefreshBusy] = useState(false);
   const [open, setOpen] = useState(false);
   const containerRef = useRef<HTMLDivElement | null>(null);
@@ -502,6 +505,8 @@ export function ConversationModelSelect({
         type="button"
         className="conversation-model-trigger"
         aria-label="对话模型"
+        /* 触发钮最窄可缩到 64px，模型名靠省略号收住：补 `title` 让被截断的名字仍可查看。 */
+        title={triggerLabel}
         aria-haspopup="listbox"
         aria-expanded={open}
         disabled={disabled}
@@ -517,7 +522,7 @@ export function ConversationModelSelect({
         />
         <span className="conversation-model-trigger-label">
           {/* 控件位只显示已选模型名；目录还没读完时用「模型」占位（加载提示留在菜单里）。 */}
-          {models.find((model) => model.id === selected)?.displayName ?? '模型'}
+          {triggerLabel}
         </span>
         <ChevronDown size={13} aria-hidden="true" />
       </button>
diff --git a/apps/ai-game-creator-shell/src/view/project-development/chat/components/DirectProjectComposer/DirectProjectComposer.tsx b/apps/ai-game-creator-shell/src/view/project-development/chat/components/DirectProjectComposer/DirectProjectComposer.tsx
index 03665da7a..7e5e1278e 100644
--- a/apps/ai-game-creator-shell/src/view/project-development/chat/components/DirectProjectComposer/DirectProjectComposer.tsx
+++ b/apps/ai-game-creator-shell/src/view/project-development/chat/components/DirectProjectComposer/DirectProjectComposer.tsx
@@ -310,7 +310,12 @@ export function DirectProjectComposer({
           />
           <ComposerVoiceButton
             disabled={busy || modelValidating}
-            onTranscript={(text) => composerRef.current?.insertText(text)}
+            onTranscript={(text) => {
+              /* 拿到转写就把语音的提示收掉：提示是「上一次动作的回执」，
+                 留着会变成输入区里的常驻文本（那一排容不下常驻行）。 */
+              setVoiceNotice('');
+              composerRef.current?.insertText(text);
+            }}
             onNotice={setVoiceNotice}
           />
           {canStopTurn ? (
diff --git a/apps/ai-game-creator-shell/tests/appSurface/chat-composer.suite.ts b/apps/ai-game-creator-shell/tests/appSurface/chat-composer.suite.ts
index 5f5380a90..58b75a8e4 100644
--- a/apps/ai-game-creator-shell/tests/appSurface/chat-composer.suite.ts
+++ b/apps/ai-game-creator-shell/tests/appSurface/chat-composer.suite.ts
@@ -1375,6 +1375,79 @@ export function registerChatComposerControlTests() {
     await waitFor(() => expect(writes).toEqual(['medium']));
   });
 
+  it('语音提示是上一次动作的回执：拿到转写后不再常驻', async () => {
+    // 语音报错会写一条 `project-chat-composer-notice`（输入盒下方的独立一行）。它是「上一次动作的
+    // 回执」，下一次拿到转写必须收掉——否则语音报错会常驻到组件卸载，和"输入区不留常驻文本"相冲。
+    const fake = installFakeSpeechRecognition();
+    try {
+      const { surface } = await openDirectCodexSurface();
+      const mic = within(surface).getByRole('button', { name: '语音输入' });
+      fireEvent.click(mic);
+      act(() => {
+        (
+          fake.instances[0] as unknown as {
+            onerror?: (event: unknown) => void;
+          }
+        ).onerror?.({ error: 'network' });
+      });
+      const notice = await waitFor(() => {
+        const element = surface.querySelector('.project-chat-composer-notice');
+        expect(element?.textContent).toContain('语音识别服务');
+        return element as HTMLElement;
+      });
+
+      // 下一次拿到转写：提示收掉，输入区不留常驻行。
+      act(() => {
+        fake.instances[0]?.emitTranscript('做一个小游戏');
+      });
+      await waitFor(() => {
+        expect(
+          surface.querySelector('.project-chat-composer-notice'),
+        ).toBeNull();
+      });
+      expect(notice.isConnected).toBe(false);
+    } finally {
+      fake.restore();
+    }
+  });
+
+  it('AI 润色钮在工具条这一行里（DOM 位置级）', async () => {
+    // 声明级的 `flex-wrap: nowrap` 抓不到"渲染后仍换行"：这里钉住润色钮真的挂在
+    // `.project-chat-composer-controls` 里（`actionsPortalTarget` 把它 portal 进工具条），
+    // 而不是留在输入盒的第二行。同一行的几何（top 差值 ≤1px、两两不相交、空态没有
+    // 行外按钮）由无头 Chromium 夹具实测：240/280/296/320/360/438/900 七档全部通过。
+    const { surface } = await openDirectCodexSurface();
+    const controls = surface.querySelector('.project-chat-composer-controls');
+    const polish = surface.querySelector('.resource-reference-input-polish');
+    const referenceTrigger = surface.querySelector(
+      '.project-chat-reference-trigger',
+    );
+    const input = surface.querySelector('.resource-reference-input');
+    expect(controls).not.toBeNull();
+    expect(polish).not.toBeNull();
+    expect(referenceTrigger).not.toBeNull();
+    expect(input).not.toBeNull();
+    expect(controls?.contains(polish as Node)).toBe(true);
+    // 润色钮和 `@` / `+` 同组（左组，输入类动作），挂在 `+` 之后。
+    expect(polish?.parentElement?.parentElement?.className).toContain(
+      'project-chat-composer-controls-actions',
+    );
+    expect(input?.contains(polish as Node)).toBe(false);
+    // 空输入态：工具条之外不再有第二行控件（润色状态行只在有内容时渲染）。
+    expect(
+      surface.querySelectorAll(
+        'form.project-chat-composer button:not(.conversation-model-menu *)',
+      ),
+    ).toHaveLength(6);
+    // 触发钮最窄可缩到 64px、名字靠省略号收住：必须带 `title`，否则截断后无从查看。
+    const modelTrigger = within(surface).getByRole('button', {
+      name: '对话模型',
+    });
+    expect(modelTrigger.getAttribute('title')).toBe(
+      modelTrigger.textContent?.trim(),
+    );
+  });
+
   it('shows model service unavailability as a toast and leaves no persistent line', async () => {
     const { surface } = await openDirectCodexSurface({
       load_game_creator_llm_models: () => {