feat: 修复订单查询和物流查询功能

主要修改：

1. 订单数据解析修复 (agent/agents/order.py)
   - 修复 Mall API 返回数据的嵌套结构解析
   - 更新字段映射：orderId→order_id, orderProduct→items, statusText→status_text
   - 支持多种商品图片字段：image, pic, thumb, productImg
   - 添加详细的调试日志

2. 物流查询修复 (mcp_servers/order_mcp/server.py)
   - 修复物流接口返回数据结构解析 (data[].trackingCode→tracking_number)
   - 添加 print() 日志用于调试
   - 支持多种字段名映射

3. Chatwoot 集成优化 (agent/integrations/chatwoot.py)
   - 添加 json 模块导入
   - 完善订单卡片和表单展示功能

4. API 请求头优化 (mcp_servers/shared/mall_client.py)
   - 更新 User-Agent 和 Accept 头
   - 修正 Origin 和 Referer 大小写

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

mcp_servers/shared/mall_client.py

@@ -55,14 +55,16 @@ class MallClient:
                 headers={
                     "Authorization": f"Bearer {self.api_token}",
                     "Content-Type": "application/json",
-                    "Accept": "application/json",
+                    "Accept": "application/json, text/plain, */*",
                     "Device-Type": "pc",
                     "tenant-Id": self.tenant_id,
                     "currency-code": self.currency_code,
                     "language-id": self.language_id,
                     "source": self.source,
-                    "origin": "https://www.qa1.gaia888.com",
-                    "referer": "https://www.qa1.gaia888.com/",
+                    "Origin": "https://www.qa1.gaia888.com",
+                    "Referer": "https://www.qa1.gaia888.com/",
+                    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36",
+                    "DNT": "1",
                 },
                 timeout=30.0
             )