[Bug] 没有回答问题，然后把钱扣了

### 📦 Deployment Method

Official installation package

### 📌 Version

3.5.5

### 💻 Operating System

Windows

### 📌 System Version

windows 10

### 🌐 Browser

Edge

### 📌 Browser Version

使用windows客户端

### 🐛 Bug Description

我原来账户里有7.6美元。问了几个问题，都弹出来说我余额不够。问题没有回答。然后账户余额变成1.29美元

### 📷 Recurrence Steps

_No response_

### 🚦 Expected Behavior

_No response_

### 📝 Additional Information

_No response_

No files, tests, or reproduction steps are named. Start by reproducing the balance deduction in the Windows client on version 3.5.5, then trace the failed-question billing flow; done means failed questions no longer reduce the balance and the missing amount is accounted for.

Written by the indexing model from the issue text.