feat: align product suite prompts with reference images

tests/test_product_suite_gui.py

@@ -422,7 +422,7 @@ class ProductSuiteGuiTests(TempDirMixin, unittest.TestCase):
     def test_prompt_preview_matches_frozen_generation_job_prompt(self):
         with self.make_temp_dir() as temp_dir:
             config = self._config(temp_dir)
-            project, _ = self._create_project_with_assets(temp_dir, config, 1)
+            project, assets = self._create_project_with_assets(temp_dir, config, 3)
             tab = ProductSuiteTab(config=config, db_path=config["db_path"])
             self.addCleanup(tab.close)
             state = tab._displayed_state
@@ -437,6 +437,7 @@ class ProductSuiteGuiTests(TempDirMixin, unittest.TestCase):
                 base_prompt=state.prompt,
                 settings=state.settings,
                 item_id=state.item_id,
+                source_image_count=len(assets),
             )
             self.addCleanup(dialog.close)
             expected = dialog.preview_edit.toPlainText()
@@ -448,6 +449,7 @@ class ProductSuiteGuiTests(TempDirMixin, unittest.TestCase):
             ), mock.patch.object(tab, "_start_thread", return_value=object()):
                 self.assertTrue(tab.start_generation(state))
             self.assertEqual(expected, state.worker.job_specs[0]["prompt"])
+            self.assertIn("第2至3张仅作为风格、构图、场景或排版参考", expected)
             state.worker = None
             state.thread = None