feat: add pluginized member context profiling

db/message_storage.py

@@ -43,6 +43,23 @@ class MessageStorageDB(BaseDBOperator):
         params = (hours_ago, group_id, min_content_length)
         return self.execute_query(sql, params) or []
 
+    def get_member_recent_messages(self, group_id: str, wxid: str, days: int = 30, limit: int = 200) -> List[Dict]:
+        """获取指定群成员近期消息"""
+        sql = """
+        SELECT timestamp, sender, content, message_type
+        FROM messages
+        WHERE timestamp >= DATE_SUB(NOW(), INTERVAL %s DAY)
+          AND group_id = %s
+          AND sender = %s
+          AND message_type IN (1, 49)
+          AND CHAR_LENGTH(content) BETWEEN 2 AND 500
+          AND content NOT LIKE '/%%'
+        ORDER BY timestamp DESC
+        LIMIT %s
+        """
+        results = self.execute_query(sql, (days, group_id, wxid, limit)) or []
+        return list(reversed(results))
+
     def get_message_count_by_date(self, date: str) -> List[Dict]:
         """获取指定日期的消息统计"""
         sql = """