[BUG] 交易到达止盈/止损自动平仓后不会被计入历史成交

[SeimoDev]

⚠️ Before submitting: Please check the Troubleshooting Guide (中文版) to see if your issue can be resolved quickly.

🐛 Bug Description

🔍 Bug Category

• Trading execution (orders not executing, wrong position size, etc.)
• AI decision issues (unexpected decisions, only opening one direction, etc.)
• [ * ] Exchange connection (API errors, authentication failures, etc.)
• UI/Frontend (display issues, buttons not working, data not updating, etc.)
• Backend/API (server errors, crashes, performance issues, etc.)
• Configuration (settings not saving, database errors, etc.)
• Other: _________________

[Xeron2000]

这是一个重复的问题。

Duplicate of #200

我已经在 PR #231 中修复了这个问题。该 PR 通过实现仓位快照机制来检测通过止损/止盈自动关闭的仓位，并将其记录到决策日志中。

Closes #200
Closes #304

等待 PR #231 合并后，两个 issue 都将被解决。