fix: keep generation progress out of chat history

src/components/puzzle-agent/PuzzleAgentWorkspace.interaction.test.tsx

@@ -102,3 +102,29 @@ test('puzzle workspace hides keyword fill before two turns', () => {
 
   expect(screen.queryByRole('button', { name: '补充剩余设定' })).toBeNull();
 });
+
+test('puzzle workspace does not render progress action messages as chat bubbles', () => {
+  render(
+    <PuzzleAgentWorkspace
+      session={{
+        ...baseSession,
+        messages: [
+          ...baseSession.messages,
+          {
+            id: 'message-action-result-1',
+            role: 'assistant',
+            kind: 'action_result',
+            text: '拼图结果页草稿已生成。',
+            createdAt: '2026-04-24T10:01:00.000Z',
+          },
+        ],
+      }}
+      onBack={() => {}}
+      onSubmitMessage={() => {}}
+      onExecuteAction={() => {}}
+    />,
+  );
+
+  expect(screen.getByText('画面主体已经清楚，继续收束剩余关键词。')).toBeTruthy();
+  expect(screen.queryByText('拼图结果页草稿已生成。')).toBeNull();
+});