fix(product-suite): allow braces in business prompts

app/gui/tabs/product_suite.py

@@ -4766,13 +4766,19 @@ class ProductSuiteTab(QWidget):
         if specs is None and not state.prompt.strip():
             self._message("商品卖点不能为空", "请填写商品卖点与要求，或使用AI帮写。")
             return False
-        specs = list(specs or product_suite.build_job_specs(
-            local_assets,
-            state.prompt,
-            state.settings,
-            state.item_id or "未绑定商品",
-            template_text=template_text,
-        ))
+        try:
+            specs = list(specs or product_suite.build_job_specs(
+                local_assets,
+                state.prompt,
+                state.settings,
+                state.item_id or "未绑定商品",
+                template_text=template_text,
+            ))
+        except product_suite.ProductSuitePromptError:
+            message = "提示词渲染失败，请检查提示词设置中的变量格式。"
+            self._message("无法生成商品套图", message)
+            self._status(message, "danger")
+            return False
         if not specs:
             self._message("生成数量为0", "请至少把一个套图分类的数量设为1。")
             return False
@@ -5044,13 +5050,16 @@ class ProductSuiteTab(QWidget):
         except prompts.PromptError:
             return False
         local_assets = [asset for asset in self._original_assets(state) if _asset_usable(asset)]
-        current_specs = product_suite.build_job_specs(
-            local_assets,
-            state.prompt,
-            state.settings,
-            state.item_id or "未绑定商品",
-            template_text=template_text,
-        )
+        try:
+            current_specs = product_suite.build_job_specs(
+                local_assets,
+                state.prompt,
+                state.settings,
+                state.item_id or "未绑定商品",
+                template_text=template_text,
+            )
+        except product_suite.ProductSuitePromptError:
+            return False
         return snapshot == self._generation_plan_snapshot(
             state,
             local_assets,