mdd metrics incorrect?

### Describe the bug

mdd incorrect?
<img width="1882" height="829" alt="Image" src="https://github.com/user-attachments/assets/9c1885a6-1fd3-44e9-a89c-98887991e381" />

### Steps to reproduce

1. Use template SMA strategy.
2. Run backtest.

### Expected behavior

_No response_

### Deployment method

Docker Compose

### Relevant logs

```shell

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