sender回来。。。

models/sender.py

@@ -0,0 +1,16 @@
+from dataclasses import dataclass
+from typing import Optional
+
+@dataclass
+class Sender:
+    user_id: int
+    nickname: str
+    sex: str = "unknown"
+    age: int = 0
+    
+    # 群聊特有字段
+    card: Optional[str] = None      # 群名片
+    area: Optional[str] = None      # 地区
+    level: Optional[str] = None     # 等级
+    role: Optional[str] = None      # 角色: owner/admin/member
+    title: Optional[str] = None     # 专属头衔