feat: test_pricing_program结果每条记录单独显示

- dspy: 每条结果json.dumps(r, ensure_ascii=False)后以\n\n分隔
- ui: 结果区改为VScrollPanel，支持长结果滚动

wwwroot/test_pricing_program.dspy

@@ -4,12 +4,19 @@ try:
 	if isinstance(data, str):
 		data = json.loads(data)
 	x = await buffered_charging(ppid, data)
+	items = []
+	if isinstance(x, list):
+		for r in x:
+			items.append(json.dumps(r, ensure_ascii=False))
+	else:
+		items.append(json.dumps(x, ensure_ascii=False))
+	result_text = '\n\n'.join(items)
 	return {
 		"status": "ok",
 		"data": {
 			"ppid": ppid,
 			"data": data,
-			"result": x
+			"items": result_text
 		}
 	}
 except Exception as e:

wwwroot/test_pricing_program.ui

@@ -29,7 +29,7 @@
 	}
 },
 {
-	"widgettype": "VBox",
+	"widgettype": "VScrollPanel",
 	"id": "result",
 	"options": {
 		"height": "50%",
@@ -52,7 +52,7 @@
 					"widgettype": "Text",
 					"options":{
 						"width": "100%",
-						"text": "${result}"
+						"text": "${items}"
 					}
 				},
 				"error": {