feat: add method to recalculate streak from recent matches

- Add recalculate_streak_from_recent_matches to Friend class
- Fetches last 20 matches and recalculates win/loss streaks
- Sorts matches chronologically to ensure accurate calculation

dota.py

@@ -220,6 +220,48 @@ class Friend(BaseModel):
     
     return data
 
+  def recalculate_streak_from_recent_matches(self):
+    """获取近20场比赛并重新计算连胜连败记录"""
+    try:
+      # 获取近20场比赛
+      recent_matches = self.get_recent_matches(limit=20)
+      if not recent_matches:
+        logger.warning(f"No recent matches found for {self.name}")
+        return False
+      
+      # 按时间从旧到新排序（start_time升序）
+      recent_matches.sort(key=lambda x: x.start_time)
+      
+      # 重置连胜连败计数
+      self.win_streak = 0
+      self.loss_streak = 0
+      
+      # 从最旧的比赛开始计算连胜连败
+      for match in recent_matches:
+        # 判断是否获胜
+        player_won = match.radiant_win == (match.player_slot < 128)
+        
+        if player_won:
+          self.win_streak += 1
+          self.loss_streak = 0
+        else:
+          self.loss_streak += 1
+          self.win_streak = 0
+      
+      # 更新最后一场比赛的ID，避免重复计算
+      if recent_matches:
+        self.last_match_id = recent_matches[-1].match_id
+      
+      # 保存更新后的数据
+      self.save()
+      
+      logger.info(f"Updated streak for {self.name}: {self.win_streak} wins, {self.loss_streak} losses")
+      return True
+      
+    except Exception as e:
+      logger.error(f"Failed to recalculate streak for {self.name}: {e}")
+      return False
+  
   def update_streak(self, match_id, win):
     """更新连胜连败计数"""
     # 避免重复计算同一场比赛