feat(ai-outfit): drop product_id from prompt UI + default template

Match the doc change (8a4ebe6): remove the 插入货号 button (keep only
插入标题) and drop 货号 {product_id} from DEFAULT_OUTFIT_PROMPT. product_id
still drives Excel column B and the output filename, not the AI prompt.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/app/widgets/ai_outfit_panel.py

@@ -258,10 +258,10 @@ class AiOutfitPanel(QWidget):
         self._prompt_edit.setFixedHeight(130)
         pv.addWidget(self._prompt_edit)
         prow = QHBoxLayout()
-        for text, ph in (("插入标题", "{title}"), ("插入货号", "{product_id}")):
+        insert_title_btn = QPushButton("插入标题")
-            b = QPushButton(text)
+        insert_title_btn.clicked.connect(
-            b.clicked.connect(lambda _=False, p=ph: self._prompt_edit.insertPlainText(p))
+            lambda: self._prompt_edit.insertPlainText("{title}"))
-            prow.addWidget(b)
+        prow.addWidget(insert_title_btn)
         preview_btn = QPushButton("预览最终提示词")
         preview_btn.clicked.connect(self._preview_prompt)
         prow.addWidget(preview_btn)

src/services/config_service.py

@@ -33,8 +33,8 @@ _OUTFIT_PROMPT_FILENAME = "outfit_prompt.txt"
 
 # Default outfit prompt (docs/11 §7). Persisted to outfit_prompt.txt on first save.
 DEFAULT_OUTFIT_PROMPT = (
-    "为商品「{title}」（货号 {product_id}）生成人物上身实穿效果图：真人模特正面"
+    "为商品「{title}」生成人物上身实穿效果图：真人模特正面穿着这件衣服，"
-    "穿着这件衣服，完整保留款式、版型、颜色与印花图案，自然光、纯色棚拍背景，"
+    "完整保留款式、版型、颜色与印花图案，自然光、纯色棚拍背景，"
     "电商主图风格，不加文字与促销标签。"
 )