刚发现，一打开 Claude Code ，什么都没做，就花了 0.07 元 😶‍🌫️ 
有人知道怎么回事吗？ 

> /cost 
  ⎿  Total cost:            $0.0747
     Total duration (API):  33s
     Total duration (wall): 1m 22s
     Total code changes:    0 lines added, 0 lines removed
     Usage by model:
             claude-haiku:  20.6k input, 619 output, 0 cache read, 8.7k cache write ($0.0345)
            claude-sonnet:  3 input, 503 output, 0 cache ...