feat(product-suite): align reference prompt rules

tests/test_product_suite.py

@@ -110,6 +110,8 @@ class ProductSuiteTests(unittest.TestCase):
             self.assertIn("禁止海报长图、详情页长图和多宫格拼接版面", spec["prompt"])
             self.assertIn("禁止在画面中出现任何国旗", spec["prompt"])
             self.assertIn("当前上传图片是本任务唯一主参考图", spec["prompt"])
+            self.assertNotIn("参考图规则：", spec["prompt"])
+            self.assertNotIn("序号%d" % spec["source_index"], spec["prompt"])
             self.assertTrue(
                 spec["prompt"].splitlines()[-1].startswith("本次生成比例：4:3")
             )
@@ -123,11 +125,49 @@ class ProductSuiteTests(unittest.TestCase):
             specs[1]["prompt"],
         )
         white_prompt = specs[0]["prompt"]
+        reference_rule = (
+            "当前上传图片是本任务唯一主参考图；保持商品主体、款式、颜色和关键细节准确；"
+            "不编造用户与参考图均未提供的信息。"
+        )
         self.assertLess(white_prompt.index("重要尺寸要求"), white_prompt.index("重要禁用内容"))
         self.assertLess(white_prompt.index("重要禁用内容"), white_prompt.index("价格信息规则"))
         self.assertLess(white_prompt.index("价格信息规则"), white_prompt.index("尺码信息规则"))
-        self.assertLess(white_prompt.index("尺码信息规则"), white_prompt.index("参考图规则"))
-        self.assertLess(white_prompt.index("参考图规则"), white_prompt.index("商品卖点与要求"))
+        self.assertLess(white_prompt.index("尺码信息规则"), white_prompt.index(reference_rule))
+        self.assertLess(white_prompt.index(reference_rule), white_prompt.index("商品卖点与要求"))
+
+    def test_reference_rule_follows_per_image_primary_setting(self):
+        template = prompts.load_default_product_suite_prompt()
+        settings = product_suite.default_suite_settings()
+
+        single_primary = product_suite.build_suite_prompt(
+            "卖点",
+            settings,
+            "场景图",
+            "51100639510",
+            template_text=template,
+        )
+        self.assertIn(
+            "使用第一張上傳圖作為主商品圖，其餘圖片只作為參考。",
+            single_primary,
+        )
+        self.assertNotIn("当前上传图片是本任务唯一主参考图", single_primary)
+        self.assertNotIn("参考图规则：使用", single_primary)
+
+        settings["per_image_primary"] = True
+        per_image_primary = product_suite.build_suite_prompt(
+            "卖点",
+            settings,
+            "场景图",
+            "51100639510",
+            source_index=2,
+            template_text=template,
+        )
+        self.assertIn(
+            "当前上传图片是本任务唯一主参考图；保持商品主体、款式、颜色和关键细节准确；不编造用户与参考图均未提供的信息。",
+            per_image_primary,
+        )
+        self.assertNotIn("使用第一張上傳圖作為主商品圖", per_image_primary)
+        self.assertNotIn("序号2", per_image_primary)
 
     def test_product_suite_template_validation_and_custom_category_rendering(self):
         default_text = prompts.load_default_product_suite_prompt()